18676516 has 12 divisors (see below), whose sum is σ = 33008220. Its totient is φ = 9245600.

The previous prime is 18676513. The next prime is 18676517. The reversal of 18676516 is 61567681.

It can be written as a sum of positive squares in 2 ways, for example, as 18455616 + 220900 = 4296^2 + 470^2 .

It is not an unprimeable number, because it can be changed into a prime (18676513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22711 + ... + 23518.

It is an arithmetic number, because the mean of its divisors is an integer number (2750685).

Almost surely, 2^18676516 is an apocalyptic number.

It is an amenable number.

18676516 is a deficient number, since it is larger than the sum of its proper divisors (14331704).

18676516 is a wasteful number, since it uses less digits than its factorization.

18676516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46334 (or 46332 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 18676516 is about 4321.6334874674. The cubic root of 18676516 is about 265.3171283477.

The spelling of 18676516 in words is "eighteen million, six hundred seventy-six thousand, five hundred sixteen".