8156343918 has 16 divisors (see below), whose sum is σ = 16380944640. Its totient is φ = 2707405176.

The previous prime is 8156343913. The next prime is 8156343919. The reversal of 8156343918 is 8193436518.

It is a super-2 number, since 2×8156343918² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8156343913) 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, 2842480 + ... + 2845347.

It is an arithmetic number, because the mean of its divisors is an integer number (1023809040).

Almost surely, 2^8156343918 is an apocalyptic number.

8156343918 is an abundant number, since it is smaller than the sum of its proper divisors (8224600722).

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

8156343918 is a wasteful number, since it uses less digits than its factorization.

8156343918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5688071.

The product of its digits is 622080, while the sum is 48.

The square root of 8156343918 is about 90312.4793038039. The cubic root of 8156343918 is about 2012.9446964930.

The spelling of 8156343918 in words is "eight billion, one hundred fifty-six million, three hundred forty-three thousand, nine hundred eighteen".