18830113 has 4 divisors (see below), whose sum is σ = 19437568. Its totient is φ = 18222660.

The previous prime is 18830099. The next prime is 18830167. The reversal of 18830113 is 31103881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31103881 = 31 ⋅1003351.

It is a cyclic number.

It is not a de Polignac number, because 18830113 - 2⁵ = 18830081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18830213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303681 + ... + 303742.

It is an arithmetic number, because the mean of its divisors is an integer number (4859392).

Almost surely, 2^18830113 is an apocalyptic number.

It is an amenable number.

18830113 is a deficient number, since it is larger than the sum of its proper divisors (607455).

18830113 is an equidigital number, since it uses as much as digits as its factorization.

18830113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607454.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 18830113 is about 4339.3678110988. The cubic root of 18830113 is about 266.0424725366.

Adding to 18830113 its reverse (31103881), we get a palindrome (49933994).

The spelling of 18830113 in words is "eighteen million, eight hundred thirty thousand, one hundred thirteen".