18466900 has 18 divisors (see below), whose sum is σ = 40073390. Its totient is φ = 7386720.

The previous prime is 18466897. The next prime is 18466901. The reversal of 18466900 is 966481.

It can be written as a sum of positive squares in 3 ways, for example, as 114244 + 18352656 = 338^2 + 4284^2 .

It is a super-2 number, since 2×18466900² = 682052791220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18466901) 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, 92235 + ... + 92434.

Almost surely, 2^18466900 is an apocalyptic number.

18466900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18466900 is an abundant number, since it is smaller than the sum of its proper divisors (21606490).

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

18466900 is a wasteful number, since it uses less digits than its factorization.

18466900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184683 (or 184676 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 18466900 is about 4297.3131140283. The cubic root of 18466900 is about 264.3207953710.

The spelling of 18466900 in words is "eighteen million, four hundred sixty-six thousand, nine hundred".