18737054991424 has 189 divisors, whose sum is σ = 47547964824759. Its totient is φ = 7299112423680.

The previous prime is 18737054991407. The next prime is 18737054991439. The reversal of 18737054991424 is 42419945073781.

The square root of 18737054991424 is 4328632.

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

It is a Harshad number since it is a multiple of its sum of digits (64).

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, 2666433799 + ... + 2666440825.

Almost surely, 2^{18737054991424} is an apocalyptic number.

18737054991424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18737054991424 is the 4328632-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18737054991424

18737054991424 is an abundant number, since it is smaller than the sum of its proper divisors (28810909833335).

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

18737054991424 is an frugal number, since it uses more digits than its factorization.

18737054991424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14102 (or 7047 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 64.

18737054991424 divided by its sum of digits (64) gives a square (292766484241 = 541079²).

The spelling of 18737054991424 in words is "eighteen trillion, seven hundred thirty-seven billion, fifty-four million, nine hundred ninety-one thousand, four hundred twenty-four".