18493713 has 24 divisors (see below), whose sum is σ = 30650048. Its totient is φ = 10526112.

The previous prime is 18493697. The next prime is 18493723. The reversal of 18493713 is 31739481.

It is a happy number.

It is not a de Polignac number, because 18493713 - 2⁴ = 18493697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18493723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23106 + ... + 23892.

Almost surely, 2^18493713 is an apocalyptic number.

It is an amenable number.

18493713 is a deficient number, since it is larger than the sum of its proper divisors (12156335).

18493713 is a wasteful number, since it uses less digits than its factorization.

18493713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173 (or 1170 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 18493713 is about 4300.4317225135. The cubic root of 18493713 is about 264.4486602924.

The spelling of 18493713 in words is "eighteen million, four hundred ninety-three thousand, seven hundred thirteen".