8158581962 has 16 divisors (see below), whose sum is σ = 12962711880. Its totient is φ = 3837861888.

The previous prime is 8158581929. The next prime is 8158581967. The reversal of 8158581962 is 2691858518.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5863118041 + 2295463921 = 76571^2 + 47911^2 .

It is not an unprimeable number, because it can be changed into a prime (8158581967) 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, 46808 + ... + 136044.

Almost surely, 2^8158581962 is an apocalyptic number.

8158581962 is a deficient number, since it is larger than the sum of its proper divisors (4804129918).

8158581962 is a wasteful number, since it uses less digits than its factorization.

8158581962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91945.

The product of its digits is 1382400, while the sum is 53.

The square root of 8158581962 is about 90324.8690118065. The cubic root of 8158581962 is about 2013.1287923271.

The spelling of 8158581962 in words is "eight billion, one hundred fifty-eight million, five hundred eighty-one thousand, nine hundred sixty-two".