18233387085293 has 2 divisors, whose sum is σ = 18233387085294. Its totient is φ = 18233387085292.

The previous prime is 18233387085247. The next prime is 18233387085341. The reversal of 18233387085293 is 39258078333281.

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., 16735610082724 + 1497777002569 = 4090918^2 + 1223837^2 .

It is an emirp because it is prime and its reverse (39258078333281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18233387085293 - 2²⁰ = 18233386036717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18233387082293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9116693542646 + 9116693542647.

It is an arithmetic number, because the mean of its divisors is an integer number (9116693542647).

Almost surely, 2^{18233387085293} is an apocalyptic number.

It is an amenable number.

18233387085293 is a deficient number, since it is larger than the sum of its proper divisors (1).

18233387085293 is an equidigital number, since it uses as much as digits as its factorization.

18233387085293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52254720, while the sum is 62.

The spelling of 18233387085293 in words is "eighteen trillion, two hundred thirty-three billion, three hundred eighty-seven million, eighty-five thousand, two hundred ninety-three".