18379337874769 has 9 divisors (see below), whose sum is σ = 18486936932529. Its totient is φ = 18272361544080.

The previous prime is 18379337874673. The next prime is 18379337874803. The reversal of 18379337874769 is 96747873397381.

It is a happy number.

The square root of 18379337874769 is 4287113.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2089137798225 + 16290200076544 = 1445385^2 + 4036112^2 .

It is not a de Polignac number, because 18379337874769 - 2⁹ = 18379337874257 is a prime.

It is a super-2 number, since 2×18379337874769² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18379337874692 and 18379337874701.

It is not an unprimeable number, because it can be changed into a prime (18379337884769) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 741658159 + ... + 741682939.

Almost surely, 2^{18379337874769} is an apocalyptic number.

18379337874769 is the 4287113-rd square number.

18379337874769 is the 2143557-th centered octagonal number.

It is an amenable number.

18379337874769 is a deficient number, since it is larger than the sum of its proper divisors (107599057760).

18379337874769 is an frugal number, since it uses more digits than its factorization.

18379337874769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49908 (or 24954 counting only the distinct ones).

The product of its digits is 8065516032, while the sum is 82.

The spelling of 18379337874769 in words is "eighteen trillion, three hundred seventy-nine billion, three hundred thirty-seven million, eight hundred seventy-four thousand, seven hundred sixty-nine".