18448713 has 12 divisors (see below), whose sum is σ = 26689728. Its totient is φ = 12279960.

The previous prime is 18448709. The next prime is 18448739. The reversal of 18448713 is 31784481.

It is not a de Polignac number, because 18448713 - 2² = 18448709 is a prime.

It is a super-2 number, since 2×18448713² = 680710022712738, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18448013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6828 + ... + 9138.

It is an arithmetic number, because the mean of its divisors is an integer number (2224144).

Almost surely, 2^18448713 is an apocalyptic number.

It is an amenable number.

18448713 is a deficient number, since it is larger than the sum of its proper divisors (8241015).

18448713 is a wasteful number, since it uses less digits than its factorization.

18448713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204 (or 3201 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 18448713 is about 4295.1965030718. The cubic root of 18448713 is about 264.2339953615.

The spelling of 18448713 in words is "eighteen million, four hundred forty-eight thousand, seven hundred thirteen".