18330157 has 8 divisors (see below), whose sum is σ = 18833472. Its totient is φ = 17829600.

The previous prime is 18330139. The next prime is 18330163. The reversal of 18330157 is 75103381.

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 18330157 - 2¹¹ = 18328109 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 (18330107) 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, 26182 + ... + 26872.

It is an arithmetic number, because the mean of its divisors is an integer number (2354184).

Almost surely, 2^18330157 is an apocalyptic number.

It is an amenable number.

18330157 is a deficient number, since it is larger than the sum of its proper divisors (503315).

18330157 is an equidigital number, since it uses as much as digits as its factorization.

18330157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 18330157 is about 4281.3732609993. The cubic root of 18330157 is about 263.6667675345. Note that the first 3 decimals are identical.

The spelling of 18330157 in words is "eighteen million, three hundred thirty thousand, one hundred fifty-seven".