18080371 has 4 divisors (see below), whose sum is σ = 18110200. Its totient is φ = 18050544.

The previous prime is 18080351. The next prime is 18080393. The reversal of 18080371 is 17308081.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18080371 - 2⁷ = 18080243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18080351) 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 3 ways as a sum of consecutive naturals, for example, 13986 + ... + 15223.

It is an arithmetic number, because the mean of its divisors is an integer number (4527550).

Almost surely, 2^18080371 is an apocalyptic number.

18080371 is a deficient number, since it is larger than the sum of its proper divisors (29829).

18080371 is an equidigital number, since it uses as much as digits as its factorization.

18080371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29828.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 18080371 is about 4252.1019508003. The cubic root of 18080371 is about 262.4636188431.

The spelling of 18080371 in words is "eighteen million, eighty thousand, three hundred seventy-one".