18080158 has 4 divisors (see below), whose sum is σ = 27120240. Its totient is φ = 9040078.

The previous prime is 18080149. The next prime is 18080203. The reversal of 18080158 is 85108081.

It is a happy number.

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

It is a super-2 number, since 2×18080158² = 653784226609928, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4520038 + ... + 4520041.

It is an arithmetic number, because the mean of its divisors is an integer number (6780060).

Almost surely, 2^18080158 is an apocalyptic number.

18080158 is a deficient number, since it is larger than the sum of its proper divisors (9040082).

18080158 is an equidigital number, since it uses as much as digits as its factorization.

18080158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9040081.

The product of its (nonzero) digits is 2560, while the sum is 31.

The square root of 18080158 is about 4252.0769042904. The cubic root of 18080158 is about 262.4625881679.

The spelling of 18080158 in words is "eighteen million, eighty thousand, one hundred fifty-eight".