18802415161 has 2 divisors, whose sum is σ = 18802415162. Its totient is φ = 18802415160.

The previous prime is 18802415129. The next prime is 18802415231. The reversal of 18802415161 is 16151420881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11624936761 + 7177478400 = 107819^2 + 84720^2 .

It is a cyclic number.

It is not a de Polignac number, because 18802415161 - 2⁵ = 18802415129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18802415161.

It is not a weakly prime, because it can be changed into another prime (18802416161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9401207580 + 9401207581.

It is an arithmetic number, because the mean of its divisors is an integer number (9401207581).

Almost surely, 2^18802415161 is an apocalyptic number.

It is an amenable number.

18802415161 is a deficient number, since it is larger than the sum of its proper divisors (1).

18802415161 is an equidigital number, since it uses as much as digits as its factorization.

18802415161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 37.

The spelling of 18802415161 in words is "eighteen billion, eight hundred two million, four hundred fifteen thousand, one hundred sixty-one".