2641902864 has 80 divisors (see below), whose sum is σ = 6913807488. Its totient is φ = 869216256.

The previous prime is 2641902827. The next prime is 2641902883. The reversal of 2641902864 is 4682091462.

It is a super-2 number, since 2×2641902864² = 13959301485622804992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3011994 + ... + 3012870.

Almost surely, 2^2641902864 is an apocalyptic number.

2641902864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2641902864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3456903744).

2641902864 is an abundant number, since it is smaller than the sum of its proper divisors (4271904624).

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

2641902864 is a wasteful number, since it uses less digits than its factorization.

2641902864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632 (or 1626 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 2641902864 is about 51399.4441993296. Note that the first 3 decimals coincide. The cubic root of 2641902864 is about 1382.4166267478.

The spelling of 2641902864 in words is "two billion, six hundred forty-one million, nine hundred two thousand, eight hundred sixty-four".