18740966 has 4 divisors (see below), whose sum is σ = 28111452. Its totient is φ = 9370482.

The previous prime is 18740941. The next prime is 18740993. The reversal of 18740966 is 66904781.

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

It is a super-2 number, since 2×18740966² = 702447613226312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4685240 + ... + 4685243.

It is an arithmetic number, because the mean of its divisors is an integer number (7027863).

Almost surely, 2^18740966 is an apocalyptic number.

18740966 is a deficient number, since it is larger than the sum of its proper divisors (9370486).

18740966 is an equidigital number, since it uses as much as digits as its factorization.

18740966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9370485.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 18740966 is about 4329.0837367739. The cubic root of 18740966 is about 265.6219685190.

The spelling of 18740966 in words is "eighteen million, seven hundred forty thousand, nine hundred sixty-six".