2131654556 has 12 divisors (see below), whose sum is σ = 3746407392. Its totient is φ = 1061252448.

The previous prime is 2131654549. The next prime is 2131654571. The reversal of 2131654556 is 6554561312.

It is a super-2 number, since 2×2131654556² = 9087902292231114272, which contains 22 as substring.

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, 1142660 + ... + 1144523.

It is an arithmetic number, because the mean of its divisors is an integer number (312200616).

Almost surely, 2^2131654556 is an apocalyptic number.

It is an amenable number.

2131654556 is a deficient number, since it is larger than the sum of its proper divisors (1614752836).

2131654556 is a wasteful number, since it uses less digits than its factorization.

2131654556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287420 (or 2287418 counting only the distinct ones).

The product of its digits is 108000, while the sum is 38.

The square root of 2131654556 is about 46169.8446607740. The cubic root of 2131654556 is about 1286.9814155071.

The spelling of 2131654556 in words is "two billion, one hundred thirty-one million, six hundred fifty-four thousand, five hundred fifty-six".