18736966 has 4 divisors (see below), whose sum is σ = 28105452. Its totient is φ = 9368482.

The previous prime is 18736961. The next prime is 18736967. The reversal of 18736966 is 66963781.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18736961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4684240 + ... + 4684243.

It is an arithmetic number, because the mean of its divisors is an integer number (7026363).

Almost surely, 2^18736966 is an apocalyptic number.

18736966 is a deficient number, since it is larger than the sum of its proper divisors (9368486).

18736966 is an equidigital number, since it uses as much as digits as its factorization.

18736966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9368485.

The product of its digits is 326592, while the sum is 46.

The square root of 18736966 is about 4328.6217205942. The cubic root of 18736966 is about 265.6030693959.

The spelling of 18736966 in words is "eighteen million, seven hundred thirty-six thousand, nine hundred sixty-six".