18113373 has 6 divisors (see below), whose sum is σ = 26163774. Its totient is φ = 12075576.

The previous prime is 18113353. The next prime is 18113411. The reversal of 18113373 is 37331181.

It can be written as a sum of positive squares in only one way, i.e., 14884164 + 3229209 = 3858^2 + 1797^2 .

It is not a de Polignac number, because 18113373 - 2⁵ = 18113341 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18113323) 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, 1006290 + ... + 1006307.

It is an arithmetic number, because the mean of its divisors is an integer number (4360629).

Almost surely, 2^18113373 is an apocalyptic number.

It is an amenable number.

18113373 is a deficient number, since it is larger than the sum of its proper divisors (8050401).

18113373 is a wasteful number, since it uses less digits than its factorization.

18113373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012603 (or 2012600 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 18113373 is about 4255.9808505208. The cubic root of 18113373 is about 262.6232129053.

It can be divided in two parts, 1811 and 3373, that added together give a square (5184 = 72²).

The spelling of 18113373 in words is "eighteen million, one hundred thirteen thousand, three hundred seventy-three".