18066900 has 36 divisors (see below), whose sum is σ = 52274432. Its totient is φ = 4817760.

The previous prime is 18066899. The next prime is 18066943. The reversal of 18066900 is 966081.

It is a super-2 number, since 2×18066900² = 652825751220000, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) 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 (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29812 + ... + 30411.

Almost surely, 2^18066900 is an apocalyptic number.

18066900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18066900 is an abundant number, since it is smaller than the sum of its proper divisors (34207532).

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

18066900 is a wasteful number, since it uses less digits than its factorization.

18066900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60240 (or 60233 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 18066900 is about 4250.5176155381. The cubic root of 18066900 is about 262.3984187454.

The spelling of 18066900 in words is "eighteen million, sixty-six thousand, nine hundred".