8158196494 has 24 divisors (see below), whose sum is σ = 14241606408. Its totient is φ = 3494801520.

The previous prime is 8158196491. The next prime is 8158196549. The reversal of 8158196494 is 4946918518.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8158196491) 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, 215857 + ... + 250819.

It is an arithmetic number, because the mean of its divisors is an integer number (593400267).

Almost surely, 2^8158196494 is an apocalyptic number.

8158196494 is a deficient number, since it is larger than the sum of its proper divisors (6083409914).

8158196494 is a wasteful number, since it uses less digits than its factorization.

8158196494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37360 (or 37353 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 55.

The square root of 8158196494 is about 90322.7351999484. The cubic root of 8158196494 is about 2013.0970871054.

The spelling of 8158196494 in words is "eight billion, one hundred fifty-eight million, one hundred ninety-six thousand, four hundred ninety-four".