5185144399 has 2 divisors, whose sum is σ = 5185144400. Its totient is φ = 5185144398.

The previous prime is 5185144397. The next prime is 5185144411. The reversal of 5185144399 is 9934415815.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5185144399 - 2¹ = 5185144397 is a prime.

Together with 5185144397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5185144397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2592572199 + 2592572200.

It is an arithmetic number, because the mean of its divisors is an integer number (2592572200).

Almost surely, 2^5185144399 is an apocalyptic number.

5185144399 is a deficient number, since it is larger than the sum of its proper divisors (1).

5185144399 is an equidigital number, since it uses as much as digits as its factorization.

5185144399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 49.

The square root of 5185144399 is about 72007.9467767274. The cubic root of 5185144399 is about 1730.8268290855.

The spelling of 5185144399 in words is "five billion, one hundred eighty-five million, one hundred forty-four thousand, three hundred ninety-nine".