18327409092 has 18 divisors (see below), whose sum is σ = 46327617518. Its totient is φ = 6109136352.

The previous prime is 18327409091. The next prime is 18327409153. The reversal of 18327409092 is 29090472381.

It can be written as a sum of positive squares in only one way, i.e., 14254927236 + 4072481856 = 119394^2 + 63816^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (18327409091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 254547313 + ... + 254547384.

Almost surely, 2^18327409092 is an apocalyptic number.

18327409092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18327409092 is an abundant number, since it is smaller than the sum of its proper divisors (28000208426).

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

18327409092 is a wasteful number, since it uses less digits than its factorization.

18327409092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509094707 (or 509094702 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 18327409092 in words is "eighteen billion, three hundred twenty-seven million, four hundred nine thousand, ninety-two".