18572286913 has 2 divisors, whose sum is σ = 18572286914. Its totient is φ = 18572286912.

The previous prime is 18572286911. The next prime is 18572286949. The reversal of 18572286913 is 31968227581.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13112998144 + 5459288769 = 114512^2 + 73887^2 .

It is a cyclic number.

It is not a de Polignac number, because 18572286913 - 2¹ = 18572286911 is a prime.

Together with 18572286911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18572286911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9286143456 + 9286143457.

It is an arithmetic number, because the mean of its divisors is an integer number (9286143457).

Almost surely, 2^18572286913 is an apocalyptic number.

It is an amenable number.

18572286913 is a deficient number, since it is larger than the sum of its proper divisors (1).

18572286913 is an equidigital number, since it uses as much as digits as its factorization.

18572286913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 52.

The spelling of 18572286913 in words is "eighteen billion, five hundred seventy-two million, two hundred eighty-six thousand, nine hundred thirteen".