18100084 has 12 divisors (see below), whose sum is σ = 33342400. Its totient is φ = 8573688.

The previous prime is 18100081. The next prime is 18100091. The reversal of 18100084 is 48000181.

It is a super-2 number, since 2×18100084² = 655226081614112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18100081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119004 + ... + 119155.

Almost surely, 2^18100084 is an apocalyptic number.

It is an amenable number.

18100084 is a deficient number, since it is larger than the sum of its proper divisors (15242316).

18100084 is a wasteful number, since it uses less digits than its factorization.

18100084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238182 (or 238180 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 18100084 is about 4254.4193493355. The cubic root of 18100084 is about 262.5589720870.

The spelling of 18100084 in words is "eighteen million, one hundred thousand, eighty-four".