18923857224336 has 135 divisors (see below), whose sum is σ = 53323087394811. Its totient is φ = 6265059869952.

The previous prime is 18923857224299. The next prime is 18923857224341. The reversal of 18923857224336 is 63342275832981.

The square root of 18923857224336 is 4350156.

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

18923857224336 is a `hidden beast` number, since 1 + 8 + 9 + 2 + 3 + 8 + 572 + 24 + 3 + 36 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 438535328400 + 18485321895936 = 662220^2 + 4299456^2 .

It is a super-2 number, since 2×18923857224336² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8195692750 + ... + 8195695058.

Almost surely, 2^{18923857224336} is an apocalyptic number.

18923857224336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

18923857224336 is the 4350156-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18923857224336

18923857224336 is an abundant number, since it is smaller than the sum of its proper divisors (34399230170475).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18923857224336 is an frugal number, since it uses more digits than its factorization.

18923857224336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4946 (or 2471 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 63.

The spelling of 18923857224336 in words is "eighteen trillion, nine hundred twenty-three billion, eight hundred fifty-seven million, two hundred twenty-four thousand, three hundred thirty-six".