18755039 has 4 divisors (see below), whose sum is σ = 18858840. Its totient is φ = 18651240.

The previous prime is 18755027. The next prime is 18755053. The reversal of 18755039 is 93055781.

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

It is a cyclic number.

It is not a de Polignac number, because 18755039 - 2²⁰ = 17706463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18754993 and 18755011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18755069) 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, 51629 + ... + 51990.

It is an arithmetic number, because the mean of its divisors is an integer number (4714710).

Almost surely, 2^18755039 is an apocalyptic number.

18755039 is a deficient number, since it is larger than the sum of its proper divisors (103801).

18755039 is a wasteful number, since it uses less digits than its factorization.

18755039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103800.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 18755039 is about 4330.7088334359. The cubic root of 18755039 is about 265.6884389930.

The spelling of 18755039 in words is "eighteen million, seven hundred fifty-five thousand, thirty-nine".