18865298441 has 16 divisors (see below), whose sum is σ = 21483342720. Its totient is φ = 16398328320.

The previous prime is 18865298437. The next prime is 18865298467. The reversal of 18865298441 is 14489256881.

It is not a de Polignac number, because 18865298441 - 2² = 18865298437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18865298141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723161 + ... + 748793.

It is an arithmetic number, because the mean of its divisors is an integer number (1342708920).

Almost surely, 2^18865298441 is an apocalyptic number.

18865298441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18865298441 is a deficient number, since it is larger than the sum of its proper divisors (2618044279).

18865298441 is a wasteful number, since it uses less digits than its factorization.

18865298441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28576.

The product of its digits is 4423680, while the sum is 56.

The spelling of 18865298441 in words is "eighteen billion, eight hundred sixty-five million, two hundred ninety-eight thousand, four hundred forty-one".