8162918389 has 2 divisors, whose sum is σ = 8162918390. Its totient is φ = 8162918388.

The previous prime is 8162918383. The next prime is 8162918443. The reversal of 8162918389 is 9838192618.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6820282225 + 1342636164 = 82585^2 + 36642^2 .

It is a cyclic number.

It is not a de Polignac number, because 8162918389 - 2³ = 8162918381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8162918381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4081459194 + 4081459195.

It is an arithmetic number, because the mean of its divisors is an integer number (4081459195).

Almost surely, 2^8162918389 is an apocalyptic number.

It is an amenable number.

8162918389 is a deficient number, since it is larger than the sum of its proper divisors (1).

8162918389 is an equidigital number, since it uses as much as digits as its factorization.

8162918389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 55.

The square root of 8162918389 is about 90348.8704356618. The cubic root of 8162918389 is about 2013.4854000428.

The spelling of 8162918389 in words is "eight billion, one hundred sixty-two million, nine hundred eighteen thousand, three hundred eighty-nine".