18313967 has 8 divisors (see below), whose sum is σ = 22032000. Its totient is φ = 14871384.

The previous prime is 18313961. The next prime is 18313979. The reversal of 18313967 is 76931381.

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

It is a cyclic number.

It is not a de Polignac number, because 18313967 - 2⁴ = 18313951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18313967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18313961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68717 + ... + 68982.

It is an arithmetic number, because the mean of its divisors is an integer number (2754000).

Almost surely, 2^18313967 is an apocalyptic number.

18313967 is a deficient number, since it is larger than the sum of its proper divisors (3718033).

18313967 is a wasteful number, since it uses less digits than its factorization.

18313967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137725.

The product of its digits is 27216, while the sum is 38.

The square root of 18313967 is about 4279.4820948334. The cubic root of 18313967 is about 263.5891173109.

The spelling of 18313967 in words is "eighteen million, three hundred thirteen thousand, nine hundred sixty-seven".