18194066 has 32 divisors (see below), whose sum is σ = 30792960. Its totient is φ = 7992400.

The previous prime is 18194053. The next prime is 18194069. The reversal of 18194066 is 66049181.

It is a super-2 number, since 2×18194066² = 662048075224712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18194069) 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, 138821 + ... + 138951.

It is an arithmetic number, because the mean of its divisors is an integer number (962280).

Almost surely, 2^18194066 is an apocalyptic number.

18194066 is a deficient number, since it is larger than the sum of its proper divisors (12598894).

18194066 is a wasteful number, since it uses less digits than its factorization.

18194066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 18194066 is about 4265.4502693151. The cubic root of 18194066 is about 263.0126206553.

It can be divided in two parts, 1819 and 4066, that added together give a palindrome (5885).

The spelling of 18194066 in words is "eighteen million, one hundred ninety-four thousand, sixty-six".