18983113 has 4 divisors (see below), whose sum is σ = 19157380. Its totient is φ = 18808848.

The previous prime is 18983093. The next prime is 18983161. The reversal of 18983113 is 31138981.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8277129 + 10705984 = 2877^2 + 3272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18983113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18983213) 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, 86970 + ... + 87187.

It is an arithmetic number, because the mean of its divisors is an integer number (4789345).

Almost surely, 2^18983113 is an apocalyptic number.

It is an amenable number.

18983113 is a deficient number, since it is larger than the sum of its proper divisors (174267).

18983113 is a wasteful number, since it uses less digits than its factorization.

18983113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174266.

The product of its digits is 5184, while the sum is 34.

The square root of 18983113 is about 4356.9614411881. The cubic root of 18983113 is about 266.7610865297.

The spelling of 18983113 in words is "eighteen million, nine hundred eighty-three thousand, one hundred thirteen".