18080971 has 4 divisors (see below), whose sum is σ = 18090000. Its totient is φ = 18071944.

The previous prime is 18080957. The next prime is 18080977. The reversal of 18080971 is 17908081.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18080971 - 2⁵ = 18080939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18080977) 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, 16 + ... + 6013.

It is an arithmetic number, because the mean of its divisors is an integer number (4522500).

Almost surely, 2^18080971 is an apocalyptic number.

18080971 is a deficient number, since it is larger than the sum of its proper divisors (9029).

18080971 is an equidigital number, since it uses as much as digits as its factorization.

18080971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9028.

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 18080971 is about 4252.1725035563. The cubic root of 18080971 is about 262.4665221100.

The spelling of 18080971 in words is "eighteen million, eighty thousand, nine hundred seventy-one".