5169841891 has 2 divisors, whose sum is σ = 5169841892. Its totient is φ = 5169841890.

The previous prime is 5169841889. The next prime is 5169841913. The reversal of 5169841891 is 1981489615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5169841891 - 2¹ = 5169841889 is a prime.

Together with 5169841889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5169841801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2584920945 + 2584920946.

It is an arithmetic number, because the mean of its divisors is an integer number (2584920946).

Almost surely, 2^5169841891 is an apocalyptic number.

5169841891 is a deficient number, since it is larger than the sum of its proper divisors (1).

5169841891 is an equidigital number, since it uses as much as digits as its factorization.

5169841891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 52.

The square root of 5169841891 is about 71901.6125757969. The cubic root of 5169841891 is about 1729.1224670658.

The spelling of 5169841891 in words is "five billion, one hundred sixty-nine million, eight hundred forty-one thousand, eight hundred ninety-one".