3897131530 has 32 divisors (see below), whose sum is σ = 7117839360. Its totient is φ = 1536118080.

The previous prime is 3897131519. The next prime is 3897131531. The reversal of 3897131530 is 351317983.

It is not an unprimeable number, because it can be changed into a prime (3897131531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194836 + ... + 213904.

It is an arithmetic number, because the mean of its divisors is an integer number (222432480).

Almost surely, 2^3897131530 is an apocalyptic number.

3897131530 is a deficient number, since it is larger than the sum of its proper divisors (3220707830).

3897131530 is a wasteful number, since it uses less digits than its factorization.

3897131530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19374.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 3897131530 is about 62427.0096192345. The cubic root of 3897131530 is about 1573.6749120211.

The spelling of 3897131530 in words is "three billion, eight hundred ninety-seven million, one hundred thirty-one thousand, five hundred thirty".