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7358379961 = 857812
BaseRepresentation
bin1101101101001011…
…11111011110111001
3200222211002102200011
412312211333132321
5110032221124321
63214055341521
7350230124542
oct66645773671
920884072604
107358379961
113136682859
1215143818a1
139036344aa
144db3a94c9
152d100aae1
hex1b697f7b9

7358379961 has 3 divisors (see below), whose sum is σ = 7358465743. Its totient is φ = 7358294180.

The previous prime is 7358379887. The next prime is 7358379967. The reversal of 7358379961 is 1699738537.

It is a happy number.

The square root of 7358379961 is 85781.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 6792891561 + 565488400 = 82419^2 + 23780^2 .

It is not a de Polignac number, because 7358379961 - 211 = 7358377913 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7358379896 and 7358379905.

It is not an unprimeable number, because it can be changed into a prime (7358379967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 42891 + ... + 128671.

Almost surely, 27358379961 is an apocalyptic number.

7358379961 is the 85781-st square number.

7358379961 is the 42891-st centered octagonal number.

It is an amenable number.

7358379961 is a deficient number, since it is larger than the sum of its proper divisors (85782).

7358379961 is an frugal number, since it uses more digits than its factorization.

7358379961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171562 (or 85781 counting only the distinct ones).

The product of its digits is 8573040, while the sum is 58.

The cubic root of 7358379961 is about 1945.0349216904.

The spelling of 7358379961 in words is "seven billion, three hundred fifty-eight million, three hundred seventy-nine thousand, nine hundred sixty-one".

Divisors: 1 85781 7358379961