5166243389 has 2 divisors, whose sum is σ = 5166243390. Its totient is φ = 5166243388.

The previous prime is 5166243347. The next prime is 5166243487. The reversal of 5166243389 is 9833426615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4657380025 + 508863364 = 68245^2 + 22558^2 .

It is a cyclic number.

It is not a de Polignac number, because 5166243389 - 2²⁴ = 5149466173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5166243689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2583121694 + 2583121695.

It is an arithmetic number, because the mean of its divisors is an integer number (2583121695).

Almost surely, 2^5166243389 is an apocalyptic number.

It is an amenable number.

5166243389 is a deficient number, since it is larger than the sum of its proper divisors (1).

5166243389 is an equidigital number, since it uses as much as digits as its factorization.

5166243389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 47.

The square root of 5166243389 is about 71876.5844277537. The cubic root of 5166243389 is about 1728.7211849747.

The spelling of 5166243389 in words is "five billion, one hundred sixty-six million, two hundred forty-three thousand, three hundred eighty-nine".