18925832246689 has 15 divisors (see below), whose sum is σ = 19218470613265. Its totient is φ = 18637649825620.

The previous prime is 18925832246677. The next prime is 18925832246693. The reversal of 18925832246689 is 98664223852981.

The square root of 18925832246689 is 4350383.

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

It is not a de Polignac number, because 18925832246689 - 2¹⁹ = 18925831722401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18925832246089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 21930280272 + ... + 21930281134.

Almost surely, 2^{18925832246689} is an apocalyptic number.

18925832246689 is the 4350383-rd square number.

18925832246689 is the 2175192-nd centered octagonal number.

It is an amenable number.

18925832246689 is a deficient number, since it is larger than the sum of its proper divisors (292638366576).

18925832246689 is an frugal number, since it uses more digits than its factorization.

18925832246689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010 (or 934 counting only the distinct ones).

The product of its digits is 716636160, while the sum is 73.

The spelling of 18925832246689 in words is "eighteen trillion, nine hundred twenty-five billion, eight hundred thirty-two million, two hundred forty-six thousand, six hundred eighty-nine".