18558848837 has 2 divisors, whose sum is σ = 18558848838. Its totient is φ = 18558848836.

The previous prime is 18558848831. The next prime is 18558848863. The reversal of 18558848837 is 73884885581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18236071681 + 322777156 = 135041^2 + 17966^2 .

It is a cyclic number.

It is not a de Polignac number, because 18558848837 - 2⁴ = 18558848821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18558848831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9279424418 + 9279424419.

It is an arithmetic number, because the mean of its divisors is an integer number (9279424419).

Almost surely, 2^18558848837 is an apocalyptic number.

It is an amenable number.

18558848837 is a deficient number, since it is larger than the sum of its proper divisors (1).

18558848837 is an equidigital number, since it uses as much as digits as its factorization.

18558848837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68812800, while the sum is 65.

It can be divided in two parts, 18 and 558848837, that added together give a palindrome (558848855).

The spelling of 18558848837 in words is "eighteen billion, five hundred fifty-eight million, eight hundred forty-eight thousand, eight hundred thirty-seven".