18743968 has 12 divisors (see below), whose sum is σ = 36902250. Its totient is φ = 9371968.

The previous prime is 18743957. The next prime is 18743969. The reversal of 18743968 is 86934781.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15460624 + 3283344 = 3932^2 + 1812^2 .

It is not an unprimeable number, because it can be changed into a prime (18743969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 292843 + ... + 292906.

Almost surely, 2^18743968 is an apocalyptic number.

It is an amenable number.

18743968 is a deficient number, since it is larger than the sum of its proper divisors (18158282).

18743968 is an equidigital number, since it uses as much as digits as its factorization.

18743968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585759 (or 585751 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 18743968 is about 4329.4304475300. The cubic root of 18743968 is about 265.6361505446.

The spelling of 18743968 in words is "eighteen million, seven hundred forty-three thousand, nine hundred sixty-eight".