8149890717 has 12 divisors (see below), whose sum is σ = 11801426364. Its totient is φ = 5419708800.

The previous prime is 8149890691. The next prime is 8149890733. The reversal of 8149890717 is 7170989418.

8149890717 is a `hidden beast` number, since 81 + 498 + 9 + 0 + 71 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8096220441 + 53670276 = 89979^2 + 7326^2 .

It is not a de Polignac number, because 8149890717 - 2⁸ = 8149890461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8149890737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1125498 + ... + 1132715.

It is an arithmetic number, because the mean of its divisors is an integer number (983452197).

Almost surely, 2^8149890717 is an apocalyptic number.

It is an amenable number.

8149890717 is a deficient number, since it is larger than the sum of its proper divisors (3651535647).

8149890717 is a wasteful number, since it uses less digits than its factorization.

8149890717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258620 (or 2258617 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 54.

The square root of 8149890717 is about 90276.7451617525. The cubic root of 8149890717 is about 2012.4136838975.

The spelling of 8149890717 in words is "eight billion, one hundred forty-nine million, eight hundred ninety thousand, seven hundred seventeen".