18388873274941 has 8 divisors (see below), whose sum is σ = 19821454330104. Its totient is φ = 16958871125760.

The previous prime is 18388873274693. The next prime is 18388873274969. The reversal of 18388873274941 is 14947237888381.

It can be written as a sum of positive squares in 4 ways, for example, as 132480712441 + 18256392562500 = 363979^2 + 4272750^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18388873274941 - 2¹¹ = 18388873272893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18388873271941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644711680 + ... + 644740201.

It is an arithmetic number, because the mean of its divisors is an integer number (2477681791263).

Almost surely, 2^{18388873274941} is an apocalyptic number.

It is an amenable number.

18388873274941 is a deficient number, since it is larger than the sum of its proper divisors (1432581055163).

18388873274941 is a wasteful number, since it uses less digits than its factorization.

18388873274941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289452991.

The product of its digits is 520224768, while the sum is 73.

The spelling of 18388873274941 in words is "eighteen trillion, three hundred eighty-eight billion, eight hundred seventy-three million, two hundred seventy-four thousand, nine hundred forty-one".