8308136691 has 24 divisors (see below), whose sum is σ = 12714618384. Its totient is φ = 5209643520.

The previous prime is 8308136677. The next prime is 8308136693. The reversal of 8308136691 is 1966318038.

It is a happy number.

It is not a de Polignac number, because 8308136691 - 2⁷ = 8308136563 is a prime.

It is a super-3 number, since 3×8308136691³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (8308136693) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237136 + ... + 269906.

It is an arithmetic number, because the mean of its divisors is an integer number (529775766).

Almost surely, 2^8308136691 is an apocalyptic number.

8308136691 is a deficient number, since it is larger than the sum of its proper divisors (4406481693).

8308136691 is a wasteful number, since it uses less digits than its factorization.

8308136691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34451 (or 34448 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 8308136691 is about 91148.9807458098. The cubic root of 8308136691 is about 2025.3552547278.

The spelling of 8308136691 in words is "eight billion, three hundred eight million, one hundred thirty-six thousand, six hundred ninety-one".