18580157 has 8 divisors (see below), whose sum is σ = 19928160. Its totient is φ = 17269200.

The previous prime is 18580153. The next prime is 18580169. The reversal of 18580157 is 75108581.

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 18580157 - 2² = 18580153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18580153) 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, 8219 + ... + 10232.

It is an arithmetic number, because the mean of its divisors is an integer number (2491020).

Almost surely, 2^18580157 is an apocalyptic number.

It is an amenable number.

18580157 is a deficient number, since it is larger than the sum of its proper divisors (1348003).

18580157 is a wasteful number, since it uses less digits than its factorization.

18580157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18523.

The product of its (nonzero) digits is 11200, while the sum is 35.

The square root of 18580157 is about 4310.4706239574. The cubic root of 18580157 is about 264.8600518917.

The spelling of 18580157 in words is "eighteen million, five hundred eighty thousand, one hundred fifty-seven".