18262021839 has 8 divisors (see below), whose sum is σ = 25188995760. Its totient is φ = 11754864576.

The previous prime is 18262021837. The next prime is 18262021901. The reversal of 18262021839 is 93812026281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18262021839 - 2¹ = 18262021837 is a prime.

It is a super-2 number, since 2×18262021839² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18262021839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18262021831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104954062 + ... + 104954235.

It is an arithmetic number, because the mean of its divisors is an integer number (3148624470).

Almost surely, 2^18262021839 is an apocalyptic number.

18262021839 is a deficient number, since it is larger than the sum of its proper divisors (6926973921).

18262021839 is a wasteful number, since it uses less digits than its factorization.

18262021839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209908329.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 18262021839 in words is "eighteen billion, two hundred sixty-two million, twenty-one thousand, eight hundred thirty-nine".