8157396911 has 4 divisors (see below), whose sum is σ = 8157653952. Its totient is φ = 8157139872.

The previous prime is 8157396883. The next prime is 8157396917. The reversal of 8157396911 is 1196937518.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8157396911 - 2⁶ = 8157396847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8157396911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8157396917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72890 + ... + 147063.

It is an arithmetic number, because the mean of its divisors is an integer number (2039413488).

Almost surely, 2^8157396911 is an apocalyptic number.

8157396911 is a deficient number, since it is larger than the sum of its proper divisors (257041).

8157396911 is a wasteful number, since it uses less digits than its factorization.

8157396911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257040.

The product of its digits is 408240, while the sum is 50.

The square root of 8157396911 is about 90318.3088360273. The cubic root of 8157396911 is about 2013.0313172260.

The spelling of 8157396911 in words is "eight billion, one hundred fifty-seven million, three hundred ninety-six thousand, nine hundred eleven".