2659861164 has 24 divisors (see below), whose sum is σ = 6263284720. Its totient is φ = 878485824.

The previous prime is 2659861109. The next prime is 2659861181. The reversal of 2659861164 is 4611689562.

It is a super-2 number, since 2×2659861164² = 14149722823510869792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015459 + ... + 1018074.

Almost surely, 2^2659861164 is an apocalyptic number.

It is an amenable number.

2659861164 is an abundant number, since it is smaller than the sum of its proper divisors (3603423556).

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

2659861164 is a wasteful number, since it uses less digits than its factorization.

2659861164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033649 (or 2033647 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 2659861164 is about 51573.8418580582. The cubic root of 2659861164 is about 1385.5418757464.

The spelling of 2659861164 in words is "two billion, six hundred fifty-nine million, eight hundred sixty-one thousand, one hundred sixty-four".