18818082961188 has 36 divisors (see below), whose sum is σ = 51077653753392. Its totient is φ = 5376595131600.

The previous prime is 18818082961177. The next prime is 18818082961199. The reversal of 18818082961188 is 88116928081881.

It is an interprime number because it is at equal distance from previous prime (18818082961177) and next prime (18818082961199).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16001770638 + ... + 16001771813.

It is an arithmetic number, because the mean of its divisors is an integer number (1418823715372).

Almost surely, 2^{18818082961188} is an apocalyptic number.

It is an amenable number.

18818082961188 is an abundant number, since it is smaller than the sum of its proper divisors (32259570792204).

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

18818082961188 is a wasteful number, since it uses less digits than its factorization.

18818082961188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32003542472 (or 32003542463 counting only the distinct ones).

The product of its (nonzero) digits is 28311552, while the sum is 69.

The spelling of 18818082961188 in words is "eighteen trillion, eight hundred eighteen billion, eighty-two million, nine hundred sixty-one thousand, one hundred eighty-eight".