975391938 has 12 divisors (see below), whose sum is σ = 2113349238. Its totient is φ = 325130640.

The previous prime is 975391883. The next prime is 975391957. The reversal of 975391938 is 839193579.

975391938 is a `hidden beast` number, since 97 + 539 + 19 + 3 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 527942529 + 447449409 = 22977^2 + 21153^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27094203 + ... + 27094238.

Almost surely, 2^975391938 is an apocalyptic number.

975391938 is an abundant number, since it is smaller than the sum of its proper divisors (1137957300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

975391938 is a wasteful number, since it uses less digits than its factorization.

975391938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54188449 (or 54188446 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The square root of 975391938 is about 31231.2653922315. The cubic root of 975391938 is about 991.7290933686.

The spelling of 975391938 in words is "nine hundred seventy-five million, three hundred ninety-one thousand, nine hundred thirty-eight".