1597149156 has 12 divisors (see below), whose sum is σ = 3726681392. Its totient is φ = 532383048.

The previous prime is 1597149091. The next prime is 1597149157. The reversal of 1597149156 is 6519417951.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1597149157) 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, 66547870 + ... + 66547893.

Almost surely, 2^1597149156 is an apocalyptic number.

It is an amenable number.

1597149156 is an abundant number, since it is smaller than the sum of its proper divisors (2129532236).

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

1597149156 is a wasteful number, since it uses less digits than its factorization.

1597149156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133095770 (or 133095768 counting only the distinct ones).

The product of its digits is 340200, while the sum is 48.

The square root of 1597149156 is about 39964.3485621873. The cubic root of 1597149156 is about 1168.9120224311.

The spelling of 1597149156 in words is "one billion, five hundred ninety-seven million, one hundred forty-nine thousand, one hundred fifty-six".