5185912691 has 2 divisors, whose sum is σ = 5185912692. Its totient is φ = 5185912690.

The previous prime is 5185912681. The next prime is 5185912723. The reversal of 5185912691 is 1962195815.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5185912691 is a prime.

It is a super-2 number, since 2×5185912691² = 53787380877349722962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5185912651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2592956345 + 2592956346.

It is an arithmetic number, because the mean of its divisors is an integer number (2592956346).

Almost surely, 2^5185912691 is an apocalyptic number.

5185912691 is a deficient number, since it is larger than the sum of its proper divisors (1).

5185912691 is an equidigital number, since it uses as much as digits as its factorization.

5185912691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 47.

The square root of 5185912691 is about 72013.2813514285. The cubic root of 5185912691 is about 1730.9123114193.

The spelling of 5185912691 in words is "five billion, one hundred eighty-five million, nine hundred twelve thousand, six hundred ninety-one".