9156997040 has 40 divisors (see below), whose sum is σ = 21365300688. Its totient is φ = 3649847040.

The previous prime is 9156997033. The next prime is 9156997043. The reversal of 9156997040 is 407996519.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 9156997040.

It is not an unprimeable number, because it can be changed into a prime (9156997043) 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, 179591 + ... + 224870.

Almost surely, 2^9156997040 is an apocalyptic number.

It is an amenable number.

9156997040 is an abundant number, since it is smaller than the sum of its proper divisors (12208303648).

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

9156997040 is a wasteful number, since it uses less digits than its factorization.

9156997040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404757 (or 404751 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 9156997040 is about 95692.1994731023. The cubic root of 9156997040 is about 2092.1092417000.

The spelling of 9156997040 in words is "nine billion, one hundred fifty-six million, nine hundred ninety-seven thousand, forty".