8133155791 has 4 divisors (see below), whose sum is σ = 8133661800. Its totient is φ = 8132649784.

The previous prime is 8133155783. The next prime is 8133155839. The reversal of 8133155791 is 1975513318.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1975513318 = 2 ⋅987756659.

It is a cyclic number.

It is not a de Polignac number, because 8133155791 - 2³ = 8133155783 is a prime.

It is a super-2 number, since 2×8133155791² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8133155291) 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, 228076 + ... + 261313.

It is an arithmetic number, because the mean of its divisors is an integer number (2033415450).

Almost surely, 2^8133155791 is an apocalyptic number.

8133155791 is a deficient number, since it is larger than the sum of its proper divisors (506009).

8133155791 is a wasteful number, since it uses less digits than its factorization.

8133155791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506008.

The product of its digits is 113400, while the sum is 43.

The square root of 8133155791 is about 90184.0107280664. The cubic root of 8133155791 is about 2011.0353148415.

The spelling of 8133155791 in words is "eight billion, one hundred thirty-three million, one hundred fifty-five thousand, seven hundred ninety-one".