18518066 has 32 divisors (see below), whose sum is σ = 34784640. Its totient is φ = 7209216.

The previous prime is 18518057. The next prime is 18518069. The reversal of 18518066 is 66081581.

It is not an unprimeable number, because it can be changed into a prime (18518069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5561 + ... + 8243.

It is an arithmetic number, because the mean of its divisors is an integer number (1087020).

Almost surely, 2^18518066 is an apocalyptic number.

18518066 is a deficient number, since it is larger than the sum of its proper divisors (16266574).

18518066 is a wasteful number, since it uses less digits than its factorization.

18518066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 18518066 is about 4303.2622508976. The cubic root of 18518066 is about 264.5646869920.

The spelling of 18518066 in words is "eighteen million, five hundred eighteen thousand, sixty-six".