2157360464 has 20 divisors (see below), whose sum is σ = 4777012704. Its totient is φ = 924583008.

The previous prime is 2157360451. The next prime is 2157360473. The reversal of 2157360464 is 4640637512.

It is a happy number.

It is a congruent number.

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, 9630962 + ... + 9631185.

Almost surely, 2^2157360464 is an apocalyptic number.

It is an amenable number.

2157360464 is an abundant number, since it is smaller than the sum of its proper divisors (2619652240).

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

2157360464 is a wasteful number, since it uses less digits than its factorization.

2157360464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19262162 (or 19262156 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 2157360464 is about 46447.3945878561. The cubic root of 2157360464 is about 1292.1340523619.

Adding to 2157360464 its reverse (4640637512), we get a palindrome (6797997976).

The spelling of 2157360464 in words is "two billion, one hundred fifty-seven million, three hundred sixty thousand, four hundred sixty-four".