18154182090 has 64 divisors (see below), whose sum is σ = 48815602560. Its totient is φ = 4282064640.

The previous prime is 18154182023. The next prime is 18154182199. The reversal of 18154182090 is 9028145181.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 731205 + ... + 755624.

It is an arithmetic number, because the mean of its divisors is an integer number (762743790).

Almost surely, 2^18154182090 is an apocalyptic number.

18154182090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18154182090 is an abundant number, since it is smaller than the sum of its proper divisors (30661420470).

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

18154182090 is a wasteful number, since it uses less digits than its factorization.

18154182090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486887.

The product of its (nonzero) digits is 23040, while the sum is 39.

The spelling of 18154182090 in words is "eighteen billion, one hundred fifty-four million, one hundred eighty-two thousand, ninety".