2156246408 has 32 divisors (see below), whose sum is σ = 4284070560. Its totient is φ = 1013925120.

The previous prime is 2156246381. The next prime is 2156246413. The reversal of 2156246408 is 8046426512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196343 + ... + 207033.

It is an arithmetic number, because the mean of its divisors is an integer number (133877205).

Almost surely, 2^2156246408 is an apocalyptic number.

It is an amenable number.

2156246408 is a deficient number, since it is larger than the sum of its proper divisors (2127824152).

2156246408 is a wasteful number, since it uses less digits than its factorization.

2156246408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12197 (or 12193 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 2156246408 is about 46435.4003751448. The cubic root of 2156246408 is about 1291.9115957109.

The spelling of 2156246408 in words is "two billion, one hundred fifty-six million, two hundred forty-six thousand, four hundred eight".