5785249891 has 4 divisors (see below), whose sum is σ = 5785402752. Its totient is φ = 5785097032.

The previous prime is 5785249831. The next prime is 5785249907. The reversal of 5785249891 is 1989425875.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5785249891 - 2⁷ = 5785249763 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5785249831) 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 in 3 ways as a sum of consecutive naturals, for example, 26961 + ... + 110893.

It is an arithmetic number, because the mean of its divisors is an integer number (1446350688).

Almost surely, 2^5785249891 is an apocalyptic number.

5785249891 is a deficient number, since it is larger than the sum of its proper divisors (152861).

5785249891 is an equidigital number, since it uses as much as digits as its factorization.

5785249891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152860.

The product of its digits is 7257600, while the sum is 58.

The square root of 5785249891 is about 76060.8302018851. The cubic root of 5785249891 is about 1795.1774087732.

The spelling of 5785249891 in words is "five billion, seven hundred eighty-five million, two hundred forty-nine thousand, eight hundred ninety-one".