18616466 has 16 divisors (see below), whose sum is σ = 32067360. Its totient is φ = 8016480.

The previous prime is 18616441. The next prime is 18616469. The reversal of 18616466 is 66461681.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18616469) 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, 21851 + ... + 22686.

It is an arithmetic number, because the mean of its divisors is an integer number (2004210).

Almost surely, 2^18616466 is an apocalyptic number.

18616466 is a deficient number, since it is larger than the sum of its proper divisors (13450894).

18616466 is a wasteful number, since it uses less digits than its factorization.

18616466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44569.

The product of its digits is 41472, while the sum is 38.

The square root of 18616466 is about 4314.6802894305. The cubic root of 18616466 is about 265.0324678387.

The spelling of 18616466 in words is "eighteen million, six hundred sixteen thousand, four hundred sixty-six".