8165908742 has 4 divisors (see below), whose sum is σ = 12248863116. Its totient is φ = 4082954370.

The previous prime is 8165908739. The next prime is 8165908757. The reversal of 8165908742 is 2478095618.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2478095618 = 2 ⋅1239047809.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2041477184 + ... + 2041477187.

It is an arithmetic number, because the mean of its divisors is an integer number (3062215779).

Almost surely, 2^8165908742 is an apocalyptic number.

8165908742 is a deficient number, since it is larger than the sum of its proper divisors (4082954374).

8165908742 is a wasteful number, since it uses less digits than its factorization.

8165908742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082954373.

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 8165908742 is about 90365.4178433321. The cubic root of 8165908742 is about 2013.7312392853.

The spelling of 8165908742 in words is "eight billion, one hundred sixty-five million, nine hundred eight thousand, seven hundred forty-two".