18730996 has 12 divisors (see below), whose sum is σ = 33080740. Its totient is φ = 9279360.

The previous prime is 18730981. The next prime is 18731021. The reversal of 18730996 is 69903781.

It can be written as a sum of positive squares in 2 ways, for example, as 7075600 + 11655396 = 2660^2 + 3414^2 .

It is a super-2 number, since 2×18730996² = 701700422304032, 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 in 3 ways as a sum of consecutive naturals, for example, 21045 + ... + 21916.

Almost surely, 2^18730996 is an apocalyptic number.

It is an amenable number.

18730996 is a deficient number, since it is larger than the sum of its proper divisors (14349744).

18730996 is a wasteful number, since it uses less digits than its factorization.

18730996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43074 (or 43072 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 18730996 is about 4327.9320697072. The cubic root of 18730996 is about 265.5748574509.

The spelling of 18730996 in words is "eighteen million, seven hundred thirty thousand, nine hundred ninety-six".