18037918080 has 512 divisors, whose sum is σ = 78633676800. Its totient is φ = 3805470720.

The previous prime is 18037918079. The next prime is 18037918103. The reversal of 18037918080 is 8081973081.

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 63 ways as a sum of consecutive naturals, for example, 1566745 + ... + 1578215.

It is an arithmetic number, because the mean of its divisors is an integer number (153581400).

Almost surely, 2^18037918080 is an apocalyptic number.

18037918080 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 18037918080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39316838400).

18037918080 is an abundant number, since it is smaller than the sum of its proper divisors (60595758720).

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

18037918080 is a wasteful number, since it uses less digits than its factorization.

18037918080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11519 (or 11501 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The spelling of 18037918080 in words is "eighteen billion, thirty-seven million, nine hundred eighteen thousand, eighty".