18497913 has 8 divisors (see below), whose sum is σ = 28187328. Its totient is φ = 10570224.

The previous prime is 18497893. The next prime is 18497923. The reversal of 18497913 is 31979481.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18497913 - 2¹⁸ = 18235769 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18497923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440406 + ... + 440447.

It is an arithmetic number, because the mean of its divisors is an integer number (3523416).

Almost surely, 2^18497913 is an apocalyptic number.

It is an amenable number.

18497913 is a deficient number, since it is larger than the sum of its proper divisors (9689415).

18497913 is an equidigital number, since it uses as much as digits as its factorization.

18497913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880863.

The product of its digits is 54432, while the sum is 42.

The square root of 18497913 is about 4300.9200178566. The cubic root of 18497913 is about 264.4686779114.

The spelling of 18497913 in words is "eighteen million, four hundred ninety-seven thousand, nine hundred thirteen".