18835831226369 has 2 divisors, whose sum is σ = 18835831226370. Its totient is φ = 18835831226368.

The previous prime is 18835831226357. The next prime is 18835831226441. The reversal of 18835831226369 is 96362213853881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18424869456400 + 410961769969 = 4292420^2 + 641063^2 .

It is a cyclic number.

It is not a de Polignac number, because 18835831226369 - 2⁴ = 18835831226353 is a prime.

It is a super-2 number, since 2×18835831226369² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18835831226869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9417915613184 + 9417915613185.

It is an arithmetic number, because the mean of its divisors is an integer number (9417915613185).

Almost surely, 2^{18835831226369} is an apocalyptic number.

It is an amenable number.

18835831226369 is a deficient number, since it is larger than the sum of its proper divisors (1).

18835831226369 is an equidigital number, since it uses as much as digits as its factorization.

18835831226369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89579520, while the sum is 65.

The spelling of 18835831226369 in words is "eighteen trillion, eight hundred thirty-five billion, eight hundred thirty-one million, two hundred twenty-six thousand, three hundred sixty-nine".