5368739891 has 4 divisors (see below), whose sum is σ = 5392184400. Its totient is φ = 5345295384.

The previous prime is 5368739861. The next prime is 5368739897. The reversal of 5368739891 is 1989378635.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5368739891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5368739891.

It is not an unprimeable number, because it can be changed into a prime (5368739897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11721911 + ... + 11722368.

It is an arithmetic number, because the mean of its divisors is an integer number (1348046100).

Almost surely, 2^5368739891 is an apocalyptic number.

5368739891 is a deficient number, since it is larger than the sum of its proper divisors (23444509).

5368739891 is a wasteful number, since it uses less digits than its factorization.

5368739891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23444508.

The product of its digits is 9797760, while the sum is 59.

The square root of 5368739891 is about 73271.6854658060. The cubic root of 5368739891 is about 1751.0187147319.

The spelling of 5368739891 in words is "five billion, three hundred sixty-eight million, seven hundred thirty-nine thousand, eight hundred ninety-one".