8391415161 has 4 divisors (see below), whose sum is σ = 11188553552. Its totient is φ = 5594276772.

The previous prime is 8391415159. The next prime is 8391415171. The reversal of 8391415161 is 1615141938.

8391415161 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8391415161 - 2¹ = 8391415159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8391415171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1398569191 + ... + 1398569196.

It is an arithmetic number, because the mean of its divisors is an integer number (2797138388).

Almost surely, 2^8391415161 is an apocalyptic number.

It is an amenable number.

8391415161 is a deficient number, since it is larger than the sum of its proper divisors (2797138391).

8391415161 is a wasteful number, since it uses less digits than its factorization.

8391415161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797138390.

The product of its digits is 25920, while the sum is 39.

The square root of 8391415161 is about 91604.6677904571. The cubic root of 8391415161 is about 2032.0999697165.

The spelling of 8391415161 in words is "eight billion, three hundred ninety-one million, four hundred fifteen thousand, one hundred sixty-one".