18180113504 has 24 divisors (see below), whose sum is σ = 40905255888. Its totient is φ = 7791477120.

The previous prime is 18180113489. The next prime is 18180113509. The reversal of 18180113504 is 40531108181.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18180113509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40580387 + ... + 40580834.

It is an arithmetic number, because the mean of its divisors is an integer number (1704385662).

Almost surely, 2^18180113504 is an apocalyptic number.

18180113504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18180113504 is an abundant number, since it is smaller than the sum of its proper divisors (22725142384).

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

18180113504 is an equidigital number, since it uses as much as digits as its factorization.

18180113504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81161238 (or 81161230 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 32.

The spelling of 18180113504 in words is "eighteen billion, one hundred eighty million, one hundred thirteen thousand, five hundred four".