18955839653 has 2 divisors, whose sum is σ = 18955839654. Its totient is φ = 18955839652.

The previous prime is 18955839631. The next prime is 18955839659. The reversal of 18955839653 is 35693855981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18916426369 + 39413284 = 137537^2 + 6278^2 .

It is a cyclic number.

It is not a de Polignac number, because 18955839653 - 2¹² = 18955835557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18955839659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9477919826 + 9477919827.

It is an arithmetic number, because the mean of its divisors is an integer number (9477919827).

Almost surely, 2^18955839653 is an apocalyptic number.

It is an amenable number.

18955839653 is a deficient number, since it is larger than the sum of its proper divisors (1).

18955839653 is an equidigital number, since it uses as much as digits as its factorization.

18955839653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992000, while the sum is 62.

The spelling of 18955839653 in words is "eighteen billion, nine hundred fifty-five million, eight hundred thirty-nine thousand, six hundred fifty-three".