2169810864 has 60 divisors (see below), whose sum is σ = 6539574496. Its totient is φ = 667633536.

The previous prime is 2169810857. The next prime is 2169810871. The reversal of 2169810864 is 4680189612.

It is an interprime number because it is at equal distance from previous prime (2169810857) and next prime (2169810871).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 577672 + ... + 581415.

Almost surely, 2^2169810864 is an apocalyptic number.

2169810864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2169810864 is an abundant number, since it is smaller than the sum of its proper divisors (4369763632).

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

2169810864 is a wasteful number, since it uses less digits than its factorization.

2169810864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159114 (or 1159105 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 2169810864 is about 46581.2286656331. The cubic root of 2169810864 is about 1294.6149755529.

The spelling of 2169810864 in words is "two billion, one hundred sixty-nine million, eight hundred ten thousand, eight hundred sixty-four".