8158136758 has 4 divisors (see below), whose sum is σ = 12237205140. Its totient is φ = 4079068378.

The previous prime is 8158136747. The next prime is 8158136759. The reversal of 8158136758 is 8576318518.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8158136759) by changing a digit.

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, 2039534188 + ... + 2039534191.

It is an arithmetic number, because the mean of its divisors is an integer number (3059301285).

Almost surely, 2^8158136758 is an apocalyptic number.

8158136758 is a deficient number, since it is larger than the sum of its proper divisors (4079068382).

8158136758 is a wasteful number, since it uses less digits than its factorization.

8158136758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079068381.

The product of its digits is 1612800, while the sum is 52.

The square root of 8158136758 is about 90322.4045184804. The cubic root of 8158136758 is about 2013.0921736558.

The spelling of 8158136758 in words is "eight billion, one hundred fifty-eight million, one hundred thirty-six thousand, seven hundred fifty-eight".