2157353407 has 6 divisors (see below), whose sum is σ = 2371305944. Its totient is φ = 1961230260.

The previous prime is 2157353383. The next prime is 2157353441. The reversal of 2157353407 is 7043537512.

2157353407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2157353407 - 2²³ = 2148964799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157353477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8914563 + ... + 8914804.

Almost surely, 2^2157353407 is an apocalyptic number.

2157353407 is a deficient number, since it is larger than the sum of its proper divisors (213952537).

2157353407 is a wasteful number, since it uses less digits than its factorization.

2157353407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17829389 (or 17829378 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 2157353407 is about 46447.3186201313. The cubic root of 2157353407 is about 1292.1326434489.

The spelling of 2157353407 in words is "two billion, one hundred fifty-seven million, three hundred fifty-three thousand, four hundred seven".