18091308088 has 32 divisors (see below), whose sum is σ = 38773100160. Its totient is φ = 7752215520.

The previous prime is 18091308083. The next prime is 18091308133. The reversal of 18091308088 is 88080319081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18091308083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404523 + ... + 447013.

It is an arithmetic number, because the mean of its divisors is an integer number (1211659380).

Almost surely, 2^18091308088 is an apocalyptic number.

It is an amenable number.

18091308088 is an abundant number, since it is smaller than the sum of its proper divisors (20681792072).

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

18091308088 is a wasteful number, since it uses less digits than its factorization.

18091308088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50107 (or 50103 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 46.

The spelling of 18091308088 in words is "eighteen billion, ninety-one million, three hundred eight thousand, eighty-eight".