| Base | Representation |
|---|---|
| bin | 101000111111011… |
| … | …1010110110101010 |
| 3 | 10112212011000121200 |
| 4 | 1101332322312222 |
| 5 | 10304103322430 |
| 6 | 344252345030 |
| 7 | 46041055623 |
| oct | 12176726652 |
| 9 | 3485130550 |
| 10 | 1375448490 |
| 11 | 64644a899 |
| 12 | 324775176 |
| 13 | 18bc63760 |
| 14 | d0960a4a |
| 15 | 80b45460 |
| hex | 51fbadaa |
1375448490 has 96 divisors (see below), whose sum is σ = 3879819216. Its totient is φ = 336061440.
The previous prime is 1375448483. The next prime is 1375448497. The reversal of 1375448490 is 948445731.
1375448490 is a `hidden beast` number, since 1 + 37 + 54 + 484 + 90 = 666.
It is an interprime number because it is at equal distance from previous prime (1375448483) and next prime (1375448497).
It can be written as a sum of positive squares in 8 ways, for example, as 43125489 + 1332323001 = 6567^2 + 36501^2 .
It is a Harshad number since it is a multiple of its sum of digits (45).
It is not an unprimeable number, because it can be changed into a prime (1375448497) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 156000 + ... + 164580.
Almost surely, 21375448490 is an apocalyptic number.
1375448490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 1375448490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1939909608).
1375448490 is an abundant number, since it is smaller than the sum of its proper divisors (2504370726).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1375448490 is a wasteful number, since it uses less digits than its factorization.
1375448490 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8744 (or 8741 counting only the distinct ones).
The product of its (nonzero) digits is 483840, while the sum is 45.
The square root of 1375448490 is about 37087.0393803550. The cubic root of 1375448490 is about 1112.1109330913.
The spelling of 1375448490 in words is "one billion, three hundred seventy-five million, four hundred forty-eight thousand, four hundred ninety".
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