13188481920 has 96 divisors (see below), whose sum is σ = 45541496520. Its totient is φ = 3516926976.

The previous prime is 13188481903. The next prime is 13188481963. The reversal of 13188481920 is 2918488131.

13188481920 is a `hidden beast` number, since 1 + 3 + 1 + 88 + 481 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 1139074 + ... + 1150593.

Almost surely, 2^13188481920 is an apocalyptic number.

13188481920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13188481920 is an abundant number, since it is smaller than the sum of its proper divisors (32353014600).

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

13188481920 is a wasteful number, since it uses less digits than its factorization.

13188481920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289692 (or 2289677 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 13188481920 in words is "thirteen billion, one hundred eighty-eight million, four hundred eighty-one thousand, nine hundred twenty".