2153891274 has 16 divisors (see below), whose sum is σ = 4389062112. Its totient is φ = 704417168.

The previous prime is 2153891263. The next prime is 2153891309. The reversal of 2153891274 is 4721983512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3386304 + ... + 3386939.

It is an arithmetic number, because the mean of its divisors is an integer number (274316382).

Almost surely, 2^2153891274 is an apocalyptic number.

2153891274 is an abundant number, since it is smaller than the sum of its proper divisors (2235170838).

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

2153891274 is a wasteful number, since it uses less digits than its factorization.

2153891274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6773301.

The product of its digits is 120960, while the sum is 42.

The square root of 2153891274 is about 46410.0341952040. The cubic root of 2153891274 is about 1291.4410660995.

The spelling of 2153891274 in words is "two billion, one hundred fifty-three million, eight hundred ninety-one thousand, two hundred seventy-four".