8013643806 has 16 divisors (see below), whose sum is σ = 18316900224. Its totient is φ = 2289612504.

The previous prime is 8013643783. The next prime is 8013643811. The reversal of 8013643806 is 6083463108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95400480 + ... + 95400563.

It is an arithmetic number, because the mean of its divisors is an integer number (1144806264).

Almost surely, 2^8013643806 is an apocalyptic number.

8013643806 is an abundant number, since it is smaller than the sum of its proper divisors (10303256418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8013643806 is a wasteful number, since it uses less digits than its factorization.

8013643806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190801055.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 8013643806 is about 89518.9578022443. The cubic root of 8013643806 is about 2001.1363380789.

The spelling of 8013643806 in words is "eight billion, thirteen million, six hundred forty-three thousand, eight hundred six".