18107319 has 8 divisors (see below), whose sum is σ = 24795760. Its totient is φ = 11745216.

The previous prime is 18107311. The next prime is 18107321. The reversal of 18107319 is 91370181.

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

It is not a de Polignac number, because 18107319 - 2³ = 18107311 is a prime.

It is a super-2 number, since 2×18107319² = 655750002735522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18107311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81454 + ... + 81675.

It is an arithmetic number, because the mean of its divisors is an integer number (3099470).

Almost surely, 2^18107319 is an apocalyptic number.

18107319 is a deficient number, since it is larger than the sum of its proper divisors (6688441).

18107319 is a wasteful number, since it uses less digits than its factorization.

18107319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163169.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 18107319 is about 4255.2695566791. The cubic root of 18107319 is about 262.5939509507.

The spelling of 18107319 in words is "eighteen million, one hundred seven thousand, three hundred nineteen".