2157498692 has 12 divisors (see below), whose sum is σ = 3897417216. Its totient is φ = 1043950920.

The previous prime is 2157498677. The next prime is 2157498701. The reversal of 2157498692 is 2968947512.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8699468 + ... + 8699715.

It is an arithmetic number, because the mean of its divisors is an integer number (324784768).

Almost surely, 2^2157498692 is an apocalyptic number.

It is an amenable number.

2157498692 is a deficient number, since it is larger than the sum of its proper divisors (1739918524).

2157498692 is a wasteful number, since it uses less digits than its factorization.

2157498692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17399218 (or 17399216 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 53.

The square root of 2157498692 is about 46448.8825699822. The cubic root of 2157498692 is about 1292.1616486297.

The spelling of 2157498692 in words is "two billion, one hundred fifty-seven million, four hundred ninety-eight thousand, six hundred ninety-two".