18520183088 has 80 divisors (see below), whose sum is σ = 39760955136. Its totient is φ = 8286539520.

The previous prime is 18520183043. The next prime is 18520183127. The reversal of 18520183088 is 88038102581.

It is a super-2 number, since 2×18520183088² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4277981 + ... + 4282307.

Almost surely, 2^18520183088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18520183088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19880477568).

18520183088 is an abundant number, since it is smaller than the sum of its proper divisors (21240772048).

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

18520183088 is a wasteful number, since it uses less digits than its factorization.

18520183088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4722 (or 4716 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 44.

The spelling of 18520183088 in words is "eighteen billion, five hundred twenty million, one hundred eighty-three thousand, eighty-eight".