2156802490 has 32 divisors (see below), whose sum is σ = 3925748736. Its totient is φ = 853079040.

The previous prime is 2156802467. The next prime is 2156802503. The reversal of 2156802490 is 942086512.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1019674 + ... + 1021786.

It is an arithmetic number, because the mean of its divisors is an integer number (122679648).

Almost surely, 2^2156802490 is an apocalyptic number.

2156802490 is a deficient number, since it is larger than the sum of its proper divisors (1768946246).

2156802490 is a wasteful number, since it uses less digits than its factorization.

2156802490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 2156802490 is about 46441.3876838322. The cubic root of 2156802490 is about 1292.0226447130.

The spelling of 2156802490 in words is "two billion, one hundred fifty-six million, eight hundred two thousand, four hundred ninety".