18522390823 has 2 divisors, whose sum is σ = 18522390824. Its totient is φ = 18522390822.

The previous prime is 18522390767. The next prime is 18522390829. The reversal of 18522390823 is 32809322581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18522390823 - 2¹³ = 18522382631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18522390823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18522390829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9261195411 + 9261195412.

It is an arithmetic number, because the mean of its divisors is an integer number (9261195412).

Almost surely, 2^18522390823 is an apocalyptic number.

18522390823 is a deficient number, since it is larger than the sum of its proper divisors (1).

18522390823 is an equidigital number, since it uses as much as digits as its factorization.

18522390823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 18522390823 in words is "eighteen billion, five hundred twenty-two million, three hundred ninety thousand, eight hundred twenty-three".