18755113 has 6 divisors (see below), whose sum is σ = 20308974. Its totient is φ = 17312256.

The previous prime is 18755111. The next prime is 18755117. The reversal of 18755113 is 31155781.

It can be written as a sum of positive squares in 3 ways, for example, as 196249 + 18558864 = 443^2 + 4308^2 .

It is not a de Polignac number, because 18755113 - 2¹ = 18755111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18755111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55320 + ... + 55657.

It is an arithmetic number, because the mean of its divisors is an integer number (3384829).

Almost surely, 2^18755113 is an apocalyptic number.

18755113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18755113 is a deficient number, since it is larger than the sum of its proper divisors (1553861).

18755113 is a wasteful number, since it uses less digits than its factorization.

18755113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111003 (or 110990 counting only the distinct ones).

The product of its digits is 4200, while the sum is 31.

The square root of 18755113 is about 4330.7173770635. The cubic root of 18755113 is about 265.6887884266.

The spelling of 18755113 in words is "eighteen million, seven hundred fifty-five thousand, one hundred thirteen".