5185788397 has 2 divisors, whose sum is σ = 5185788398. Its totient is φ = 5185788396.

The previous prime is 5185788373. The next prime is 5185788431. The reversal of 5185788397 is 7938875815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3018513481 + 2167274916 = 54941^2 + 46554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5185788397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5185788337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2592894198 + 2592894199.

It is an arithmetic number, because the mean of its divisors is an integer number (2592894199).

Almost surely, 2^5185788397 is an apocalyptic number.

It is an amenable number.

5185788397 is a deficient number, since it is larger than the sum of its proper divisors (1).

5185788397 is an equidigital number, since it uses as much as digits as its factorization.

5185788397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16934400, while the sum is 61.

The square root of 5185788397 is about 72012.4183526703. The cubic root of 5185788397 is about 1730.8984826910.

The spelling of 5185788397 in words is "five billion, one hundred eighty-five million, seven hundred eighty-eight thousand, three hundred ninety-seven".