5195918461 has 2 divisors, whose sum is σ = 5195918462. Its totient is φ = 5195918460.

The previous prime is 5195918447. The next prime is 5195918579. The reversal of 5195918461 is 1648195915.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4279645561 + 916272900 = 65419^2 + 30270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5195918461 is a prime.

It is a super-3 number, since 3×5195918461³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5195418461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2597959230 + 2597959231.

It is an arithmetic number, because the mean of its divisors is an integer number (2597959231).

Almost surely, 2^5195918461 is an apocalyptic number.

It is an amenable number.

5195918461 is a deficient number, since it is larger than the sum of its proper divisors (1).

5195918461 is an equidigital number, since it uses as much as digits as its factorization.

5195918461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 49.

The square root of 5195918461 is about 72082.7195727242. The cubic root of 5195918461 is about 1732.0248114335.

The spelling of 5195918461 in words is "five billion, one hundred ninety-five million, nine hundred eighteen thousand, four hundred sixty-one".