957138769 has 4 divisors (see below), whose sum is σ = 973361520. Its totient is φ = 940916020.

The previous prime is 957138703. The next prime is 957138773. The reversal of 957138769 is 967831759.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-957138769 is a prime.

It is a super-2 number, since 2×957138769² = 1832229246245670722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (957135769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8111287 + ... + 8111404.

It is an arithmetic number, because the mean of its divisors is an integer number (243340380).

Almost surely, 2^957138769 is an apocalyptic number.

It is an amenable number.

957138769 is a deficient number, since it is larger than the sum of its proper divisors (16222751).

957138769 is a wasteful number, since it uses less digits than its factorization.

957138769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16222750.

The product of its digits is 2857680, while the sum is 55.

The square root of 957138769 is about 30937.6593975692. The cubic root of 957138769 is about 985.5037985535.

The spelling of 957138769 in words is "nine hundred fifty-seven million, one hundred thirty-eight thousand, seven hundred sixty-nine".