2113671564 has 24 divisors (see below), whose sum is σ = 5479889520. Its totient is φ = 704557152.

The previous prime is 2113671517. The next prime is 2113671577. The reversal of 2113671564 is 4651763112.

2113671564 is a `hidden beast` number, since 21 + 1 + 3 + 6 + 71 + 564 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9785409 + ... + 9785624.

It is an arithmetic number, because the mean of its divisors is an integer number (228328730).

Almost surely, 2^2113671564 is an apocalyptic number.

It is an amenable number.

2113671564 is an abundant number, since it is smaller than the sum of its proper divisors (3366217956).

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

2113671564 is a wasteful number, since it uses less digits than its factorization.

2113671564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19571046 (or 19571038 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 2113671564 is about 45974.6839467114. The cubic root of 2113671564 is about 1283.3521275185.

The spelling of 2113671564 in words is "two billion, one hundred thirteen million, six hundred seventy-one thousand, five hundred sixty-four".