5131440869 has 2 divisors, whose sum is σ = 5131440870. Its totient is φ = 5131440868.

The previous prime is 5131440863. The next prime is 5131440877. The reversal of 5131440869 is 9680441315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5105817025 + 25623844 = 71455^2 + 5062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5131440869 is a prime.

It is a super-2 number, since 2×5131440869² = 52663370784086950322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5131440863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2565720434 + 2565720435.

It is an arithmetic number, because the mean of its divisors is an integer number (2565720435).

Almost surely, 2^5131440869 is an apocalyptic number.

It is an amenable number.

5131440869 is a deficient number, since it is larger than the sum of its proper divisors (1).

5131440869 is an equidigital number, since it uses as much as digits as its factorization.

5131440869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 5131440869 is about 71634.0761718890. The cubic root of 5131440869 is about 1724.8305785018.

The spelling of 5131440869 in words is "five billion, one hundred thirty-one million, four hundred forty thousand, eight hundred sixty-nine".