5195391269 has 2 divisors, whose sum is σ = 5195391270. Its totient is φ = 5195391268.

The previous prime is 5195391263. The next prime is 5195391281. The reversal of 5195391269 is 9621935915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3137680225 + 2057711044 = 56015^2 + 45362^2 .

It is a cyclic number.

It is not a de Polignac number, because 5195391269 - 2¹² = 5195387173 is a prime.

It is a super-2 number, since 2×5195391269² = 53984180876002860722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5195391263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2597695634 + 2597695635.

It is an arithmetic number, because the mean of its divisors is an integer number (2597695635).

Almost surely, 2^5195391269 is an apocalyptic number.

It is an amenable number.

5195391269 is a deficient number, since it is larger than the sum of its proper divisors (1).

5195391269 is an equidigital number, since it uses as much as digits as its factorization.

5195391269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 656100, while the sum is 50.

The square root of 5195391269 is about 72079.0626257029. The cubic root of 5195391269 is about 1731.9662308050.

The spelling of 5195391269 in words is "five billion, one hundred ninety-five million, three hundred ninety-one thousand, two hundred sixty-nine".