18589313453 has 2 divisors, whose sum is σ = 18589313454. Its totient is φ = 18589313452.

The previous prime is 18589313441. The next prime is 18589313473. The reversal of 18589313453 is 35431398581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11359722724 + 7229590729 = 106582^2 + 85027^2 .

It is a cyclic number.

It is not a de Polignac number, because 18589313453 - 2²⁴ = 18572536237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18589313473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9294656726 + 9294656727.

It is an arithmetic number, because the mean of its divisors is an integer number (9294656727).

Almost surely, 2^18589313453 is an apocalyptic number.

It is an amenable number.

18589313453 is a deficient number, since it is larger than the sum of its proper divisors (1).

18589313453 is an equidigital number, since it uses as much as digits as its factorization.

18589313453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 50.

The spelling of 18589313453 in words is "eighteen billion, five hundred eighty-nine million, three hundred thirteen thousand, four hundred fifty-three".