18013500810 has 48 divisors (see below), whose sum is σ = 49300112160. Its totient is φ = 4550778720.

The previous prime is 18013500787. The next prime is 18013500811. The reversal of 18013500810 is 1800531081.

18013500810 is a `hidden beast` number, since 1 + 80 + 1 + 3 + 500 + 81 + 0 = 666.

It is a super-2 number, since 2×18013500810² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18013500811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5265396 + ... + 5268815.

It is an arithmetic number, because the mean of its divisors is an integer number (1027085670).

Almost surely, 2^18013500810 is an apocalyptic number.

18013500810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18013500810 is an abundant number, since it is smaller than the sum of its proper divisors (31286611350).

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

18013500810 is a wasteful number, since it uses less digits than its factorization.

18013500810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10534243 (or 10534240 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The spelling of 18013500810 in words is "eighteen billion, thirteen million, five hundred thousand, eight hundred ten".