18137306880 has 1296 divisors, whose sum is σ = 83751542784. Its totient is φ = 3576545280.

The previous prime is 18137306867. The next prime is 18137306893. The reversal of 18137306880 is 8860373181.

It is an interprime number because it is at equal distance from previous prime (18137306867) and next prime (18137306893).

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 143 ways as a sum of consecutive naturals, for example, 142813377 + ... + 142813503.

It is an arithmetic number, because the mean of its divisors is an integer number (64623104).

Almost surely, 2^18137306880 is an apocalyptic number.

18137306880 is a gapful number since it is divisible by the number (10) 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 18137306880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41875771392).

18137306880 is an abundant number, since it is smaller than the sum of its proper divisors (65614235904).

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

18137306880 is a wasteful number, since it uses less digits than its factorization.

18137306880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 18137306880 in words is "eighteen billion, one hundred thirty-seven million, three hundred six thousand, eight hundred eighty".