5166247819 has 2 divisors, whose sum is σ = 5166247820. Its totient is φ = 5166247818.

The previous prime is 5166247817. The next prime is 5166247841. The reversal of 5166247819 is 9187426615.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5166247819 - 2¹ = 5166247817 is a prime.

It is a super-2 number, since 2×5166247819² = 53380233054644513522, which contains 22 as substring.

Together with 5166247817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5166247813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2583123909 + 2583123910.

It is an arithmetic number, because the mean of its divisors is an integer number (2583123910).

Almost surely, 2^5166247819 is an apocalyptic number.

5166247819 is a deficient number, since it is larger than the sum of its proper divisors (1).

5166247819 is an equidigital number, since it uses as much as digits as its factorization.

5166247819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 49.

The square root of 5166247819 is about 71876.6152444590. The cubic root of 5166247819 is about 1728.7216790947.

The spelling of 5166247819 in words is "five billion, one hundred sixty-six million, two hundred forty-seven thousand, eight hundred nineteen".