8691243741 has 6 divisors (see below), whose sum is σ = 12554018750. Its totient is φ = 5794162488.

The previous prime is 8691243683. The next prime is 8691243751. The reversal of 8691243741 is 1473421968.

It can be written as a sum of positive squares in only one way, i.e., 6045684516 + 2645559225 = 77754^2 + 51435^2 .

It is not a de Polignac number, because 8691243741 - 2¹⁸ = 8690981597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8691243751) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 482846866 + ... + 482846883.

Almost surely, 2^8691243741 is an apocalyptic number.

It is an amenable number.

8691243741 is a deficient number, since it is larger than the sum of its proper divisors (3862775009).

8691243741 is a wasteful number, since it uses less digits than its factorization.

8691243741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965693755 (or 965693752 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 8691243741 is about 93226.8402392787. The cubic root of 8691243741 is about 2056.0198812752.

The spelling of 8691243741 in words is "eight billion, six hundred ninety-one million, two hundred forty-three thousand, seven hundred forty-one".