975137691 has 16 divisors (see below), whose sum is σ = 1419223680. Its totient is φ = 590641920.

The previous prime is 975137671. The next prime is 975137707. The reversal of 975137691 is 196731579.

It is not a de Polignac number, because 975137691 - 2⁹ = 975137179 is a prime.

It is a super-2 number, since 2×975137691² = 1901787032817622962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 975137691.

It is not an unprimeable number, because it can be changed into a prime (975137651) 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 15 ways as a sum of consecutive naturals, for example, 54516 + ... + 70158.

It is an arithmetic number, because the mean of its divisors is an integer number (88701480).

Almost surely, 2^975137691 is an apocalyptic number.

975137691 is a deficient number, since it is larger than the sum of its proper divisors (444085989).

975137691 is a wasteful number, since it uses less digits than its factorization.

975137691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17546.

The product of its digits is 357210, while the sum is 48.

The square root of 975137691 is about 31227.1947347180. The cubic root of 975137691 is about 991.6429173921.

The spelling of 975137691 in words is "nine hundred seventy-five million, one hundred thirty-seven thousand, six hundred ninety-one".