18490966 has 24 divisors (see below), whose sum is σ = 30291624. Its totient is φ = 8461440.

The previous prime is 18490961. The next prime is 18490987. The reversal of 18490966 is 66909481.

It is a super-2 number, since 2×18490966² = 683831647226312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18490961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76606 + ... + 76846.

It is an arithmetic number, because the mean of its divisors is an integer number (1262151).

Almost surely, 2^18490966 is an apocalyptic number.

18490966 is a deficient number, since it is larger than the sum of its proper divisors (11800658).

18490966 is a wasteful number, since it uses less digits than its factorization.

18490966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 18490966 is about 4300.1123241143. The cubic root of 18490966 is about 264.4355661769.

It can be divided in two parts, 18 and 490966, that multiplied together give a palindrome (8837388).

The spelling of 18490966 in words is "eighteen million, four hundred ninety thousand, nine hundred sixty-six".