2164781504 has 14 divisors (see below), whose sum is σ = 4295738424. Its totient is φ = 1082390720.

The previous prime is 2164781497. The next prime is 2164781537. The reversal of 2164781504 is 4051874612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16912292 + ... + 16912419.

Almost surely, 2^2164781504 is an apocalyptic number.

It is an amenable number.

2164781504 is a deficient number, since it is larger than the sum of its proper divisors (2130956920).

2164781504 is an equidigital number, since it uses as much as digits as its factorization.

2164781504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33824723 (or 33824713 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 2164781504 is about 46527.2125105298. The cubic root of 2164781504 is about 1293.6139479202.

The spelling of 2164781504 in words is "two billion, one hundred sixty-four million, seven hundred eighty-one thousand, five hundred four".