18923500216925 has 6 divisors (see below), whose sum is σ = 23465140269018. Its totient is φ = 15138800173520.

The previous prime is 18923500216903. The next prime is 18923500216949. The reversal of 18923500216925 is 52961200532981.

It can be written as a sum of positive squares in 3 ways, for example, as 1260199327396 + 17663300889529 = 1122586^2 + 4202773^2 .

It is not a de Polignac number, because 18923500216925 - 2¹² = 18923500212829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 378470004314 + ... + 378470004363.

It is an arithmetic number, because the mean of its divisors is an integer number (3910856711503).

Almost surely, 2^{18923500216925} is an apocalyptic number.

It is an amenable number.

18923500216925 is a deficient number, since it is larger than the sum of its proper divisors (4541640052093).

18923500216925 is an equidigital number, since it uses as much as digits as its factorization.

18923500216925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756940008687 (or 756940008682 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 53.

The spelling of 18923500216925 in words is "eighteen trillion, nine hundred twenty-three billion, five hundred million, two hundred sixteen thousand, nine hundred twenty-five".