12913091800 has 48 divisors (see below), whose sum is σ = 34311933360. Its totient is φ = 4427345280.

The previous prime is 12913091759. The next prime is 12913091803. The reversal of 12913091800 is 819031921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12913091803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4610419 + ... + 4613218.

It is an arithmetic number, because the mean of its divisors is an integer number (714831945).

Almost surely, 2^12913091800 is an apocalyptic number.

12913091800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12913091800 is an abundant number, since it is smaller than the sum of its proper divisors (21398841560).

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

12913091800 is a wasteful number, since it uses less digits than its factorization.

12913091800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9223660 (or 9223651 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 12913091800 in words is "twelve billion, nine hundred thirteen million, ninety-one thousand, eight hundred".