2156004516 has 48 divisors (see below), whose sum is σ = 5159827008. Its totient is φ = 700262400.

The previous prime is 2156004503. The next prime is 2156004527. The reversal of 2156004516 is 6154006512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475476 + ... + 479988.

It is an arithmetic number, because the mean of its divisors is an integer number (107496396).

Almost surely, 2^2156004516 is an apocalyptic number.

It is an amenable number.

2156004516 is an abundant number, since it is smaller than the sum of its proper divisors (3003822492).

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

2156004516 is a wasteful number, since it uses less digits than its factorization.

2156004516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532 (or 5530 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 2156004516 is about 46432.7956944227. The cubic root of 2156004516 is about 1291.8632841690.

It can be divided in two parts, 215600 and 4516, that added together give a triangular number (220116 = T₆₆₃).

The spelling of 2156004516 in words is "two billion, one hundred fifty-six million, four thousand, five hundred sixteen".