Base | Representation |
---|---|
bin | 111010101010000… |
… | …0001111100000000 |
3 | 12002011111011101000 |
4 | 1311110001330000 |
5 | 13012323410323 |
6 | 523145012000 |
7 | 66526203642 |
oct | 16524017400 |
9 | 5064434330 |
10 | 1968185088 |
11 | 91aa97651 |
12 | 46b184000 |
13 | 2549b827c |
14 | 149576892 |
15 | b7bcae43 |
hex | 75501f00 |
1968185088 has 72 divisors (see below), whose sum is σ = 5820290000. Its totient is φ = 656059392.
The previous prime is 1968185083. The next prime is 1968185101. The reversal of 1968185088 is 8805818691.
It is a tau number, because it is divible by the number of its divisors (72).
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1968185083) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135463 + ... + 149286.
Almost surely, 21968185088 is an apocalyptic number.
1968185088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
1968185088 is an abundant number, since it is smaller than the sum of its proper divisors (3852104912).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1968185088 is an equidigital number, since it uses as much as digits as its factorization.
1968185088 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 284774 (or 284754 counting only the distinct ones).
The product of its (nonzero) digits is 1105920, while the sum is 54.
The square root of 1968185088 is about 44364.2320794579. The cubic root of 1968185088 is about 1253.2045962032.
The spelling of 1968185088 in words is "one billion, nine hundred sixty-eight million, one hundred eighty-five thousand, eighty-eight".
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