2156332136 has 32 divisors (see below), whose sum is σ = 4707901440. Its totient is φ = 906704448.

The previous prime is 2156332121. The next prime is 2156332151. The reversal of 2156332136 is 6312336512.

It is an interprime number because it is at equal distance from previous prime (2156332121) and next prime (2156332151).

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, 360296 + ... + 366231.

It is an arithmetic number, because the mean of its divisors is an integer number (147121920).

Almost surely, 2^2156332136 is an apocalyptic number.

It is an amenable number.

2156332136 is an abundant number, since it is smaller than the sum of its proper divisors (2551569304).

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

2156332136 is a wasteful number, since it uses less digits than its factorization.

2156332136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726593 (or 726589 counting only the distinct ones).

The product of its digits is 19440, while the sum is 32.

The square root of 2156332136 is about 46436.3234548128. The cubic root of 2156332136 is about 1291.9287167489.

Adding to 2156332136 its reverse (6312336512), we get a palindrome (8468668648).

The spelling of 2156332136 in words is "two billion, one hundred fifty-six million, three hundred thirty-two thousand, one hundred thirty-six".