18066492 has 72 divisors (see below), whose sum is σ = 48972560. Its totient is φ = 5598720.

The previous prime is 18066487. The next prime is 18066571. The reversal of 18066492 is 29466081.

18066492 is a `hidden beast` number, since 1 + 8 + 0 + 6 + 649 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41508 + ... + 41940.

Almost surely, 2^18066492 is an apocalyptic number.

18066492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18066492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24486280).

18066492 is an abundant number, since it is smaller than the sum of its proper divisors (30906068).

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

18066492 is a wasteful number, since it uses less digits than its factorization.

18066492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 18066492 is about 4250.4696211125. The cubic root of 18066492 is about 262.3964435060.

The spelling of 18066492 in words is "eighteen million, sixty-six thousand, four hundred ninety-two".