18132113 has 8 divisors (see below), whose sum is σ = 18500832. Its totient is φ = 17767296.

The previous prime is 18132089. The next prime is 18132131. The reversal of 18132113 is 31123181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18132113 - 2⁸ = 18131857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18132173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9506 + ... + 11252.

It is an arithmetic number, because the mean of its divisors is an integer number (2312604).

Almost surely, 2^18132113 is an apocalyptic number.

It is an amenable number.

18132113 is a deficient number, since it is larger than the sum of its proper divisors (368719).

18132113 is a wasteful number, since it uses less digits than its factorization.

18132113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951.

The product of its digits is 144, while the sum is 20.

The square root of 18132113 is about 4258.1818890226. The cubic root of 18132113 is about 262.7137512184.

Adding to 18132113 its reverse (31123181), we get a palindrome (49255294).

The spelling of 18132113 in words is "eighteen million, one hundred thirty-two thousand, one hundred thirteen".