18312468 has 24 divisors (see below), whose sum is σ = 45243072. Its totient is φ = 5745024.

The previous prime is 18312457. The next prime is 18312487. The reversal of 18312468 is 86421381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44680 + ... + 45087.

It is an arithmetic number, because the mean of its divisors is an integer number (1885128).

Almost surely, 2^18312468 is an apocalyptic number.

It is an amenable number.

18312468 is an abundant number, since it is smaller than the sum of its proper divisors (26930604).

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

18312468 is a wasteful number, since it uses less digits than its factorization.

18312468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89791 (or 89789 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 18312468 is about 4279.3069532344. The cubic root of 18312468 is about 263.5819255163.

The spelling of 18312468 in words is "eighteen million, three hundred twelve thousand, four hundred sixty-eight".