2156623614 has 48 divisors (see below), whose sum is σ = 4973950800. Its totient is φ = 673377408.

The previous prime is 2156623561. The next prime is 2156623619. The reversal of 2156623614 is 4163266512.

2156623614 is a `hidden beast` number, since 2 + 15 + 6 + 6 + 23 + 614 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156623619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4989 + ... + 65864.

It is an arithmetic number, because the mean of its divisors is an integer number (103623975).

Almost surely, 2^2156623614 is an apocalyptic number.

2156623614 is an abundant number, since it is smaller than the sum of its proper divisors (2817327186).

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

2156623614 is a wasteful number, since it uses less digits than its factorization.

2156623614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70969 (or 70966 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 2156623614 is about 46439.4618185870. The cubic root of 2156623614 is about 1291.9869254429.

The spelling of 2156623614 in words is "two billion, one hundred fifty-six million, six hundred twenty-three thousand, six hundred fourteen".