15397857484 has 12 divisors (see below), whose sum is σ = 26973669744. Its totient is φ = 7691094704.

The previous prime is 15397857481. The next prime is 15397857499. The reversal of 15397857484 is 48475879351.

It is not an unprimeable number, because it can be changed into a prime (15397857481) 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, 1954087 + ... + 1961950.

It is an arithmetic number, because the mean of its divisors is an integer number (2247805812).

Almost surely, 2^15397857484 is an apocalyptic number.

It is an amenable number.

15397857484 is a deficient number, since it is larger than the sum of its proper divisors (11575812260).

15397857484 is a wasteful number, since it uses less digits than its factorization.

15397857484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3917024 (or 3917022 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 61.

The spelling of 15397857484 in words is "fifteen billion, three hundred ninety-seven million, eight hundred fifty-seven thousand, four hundred eighty-four".