8163159490 has 16 divisors (see below), whose sum is σ = 14700366648. Its totient is φ = 3263779456.

The previous prime is 8163159401. The next prime is 8163159493. The reversal of 8163159490 is 949513618.

It can be written as a sum of positive squares in 4 ways, for example, as 7759671921 + 403487569 = 88089^2 + 20087^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8163159490.

It is not an unprimeable number, because it can be changed into a prime (8163159493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162307 + ... + 206566.

Almost surely, 2^8163159490 is an apocalyptic number.

8163159490 is a deficient number, since it is larger than the sum of its proper divisors (6537207158).

8163159490 is a wasteful number, since it uses less digits than its factorization.

8163159490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371093.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 8163159490 is about 90350.2047036973. The cubic root of 8163159490 is about 2013.5052233682.

The spelling of 8163159490 in words is "eight billion, one hundred sixty-three million, one hundred fifty-nine thousand, four hundred ninety".