18264492 has 18 divisors (see below), whose sum is σ = 46168668. Its totient is φ = 6088152.

The previous prime is 18264481. The next prime is 18264497. The reversal of 18264492 is 29446281.

18264492 is a `hidden beast` number, since 1 + 8 + 2 + 644 + 9 + 2 = 666.

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

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 507347 = 18264492 / (1 + 8 + 2 + 6 + 4 + 4 + 9 + 2).

It is not an unprimeable number, because it can be changed into a prime (18264497) 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, 253638 + ... + 253709.

It is an arithmetic number, because the mean of its divisors is an integer number (2564926).

Almost surely, 2^18264492 is an apocalyptic number.

18264492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18264492 is an abundant number, since it is smaller than the sum of its proper divisors (27904176).

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

18264492 is a wasteful number, since it uses less digits than its factorization.

18264492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507357 (or 507352 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 18264492 is about 4273.6976963749. The cubic root of 18264492 is about 263.3515421189.

The spelling of 18264492 in words is "eighteen million, two hundred sixty-four thousand, four hundred ninety-two".