2156610236 has 24 divisors (see below), whose sum is σ = 4121402880. Its totient is φ = 979268400.

The previous prime is 2156610233. The next prime is 2156610283. The reversal of 2156610236 is 6320166512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156610233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18875 + ... + 68333.

It is an arithmetic number, because the mean of its divisors is an integer number (171725120).

Almost surely, 2^2156610236 is an apocalyptic number.

It is an amenable number.

2156610236 is a deficient number, since it is larger than the sum of its proper divisors (1964792644).

2156610236 is a wasteful number, since it uses less digits than its factorization.

2156610236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50465 (or 50463 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 2156610236 is about 46439.3177813800. The cubic root of 2156610236 is about 1291.9842539464.

Adding to 2156610236 its reverse (6320166512), we get a palindrome (8476776748).

The spelling of 2156610236 in words is "two billion, one hundred fifty-six million, six hundred ten thousand, two hundred thirty-six".