18539066 has 16 divisors (see below), whose sum is σ = 34226304. Its totient is φ = 7334064.

The previous prime is 18539051. The next prime is 18539069. The reversal of 18539066 is 66093581.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18539069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50750 + ... + 51113.

It is an arithmetic number, because the mean of its divisors is an integer number (2139144).

Almost surely, 2^18539066 is an apocalyptic number.

18539066 is a deficient number, since it is larger than the sum of its proper divisors (15687238).

18539066 is a wasteful number, since it uses less digits than its factorization.

18539066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101885.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 18539066 is about 4305.7015688503. The cubic root of 18539066 is about 264.6646571074.

The spelling of 18539066 in words is "eighteen million, five hundred thirty-nine thousand, sixty-six".