18772966 has 8 divisors (see below), whose sum is σ = 28216944. Its totient is φ = 9367320.

The previous prime is 18772937. The next prime is 18772979. The reversal of 18772966 is 66927781.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8325 + ... + 10336.

It is an arithmetic number, because the mean of its divisors is an integer number (3527118).

Almost surely, 2^18772966 is an apocalyptic number.

18772966 is a deficient number, since it is larger than the sum of its proper divisors (9443978).

18772966 is a wasteful number, since it uses less digits than its factorization.

18772966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19166.

The product of its digits is 254016, while the sum is 46.

The square root of 18772966 is about 4332.7780926329. The cubic root of 18772966 is about 265.7730647814.

It can be divided in two parts, 187 and 72966, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 18772966 in words is "eighteen million, seven hundred seventy-two thousand, nine hundred sixty-six".