18836802653 has 2 divisors, whose sum is σ = 18836802654. Its totient is φ = 18836802652.

The previous prime is 18836802631. The next prime is 18836802661. The reversal of 18836802653 is 35620863881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17970206809 + 866595844 = 134053^2 + 29438^2 .

It is an emirp because it is prime and its reverse (35620863881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18836802653 - 2³⁰ = 17763060829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18836802253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9418401326 + 9418401327.

It is an arithmetic number, because the mean of its divisors is an integer number (9418401327).

Almost surely, 2^18836802653 is an apocalyptic number.

It is an amenable number.

18836802653 is a deficient number, since it is larger than the sum of its proper divisors (1).

18836802653 is an equidigital number, since it uses as much as digits as its factorization.

18836802653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 18836802653 in words is "eighteen billion, eight hundred thirty-six million, eight hundred two thousand, six hundred fifty-three".