5181868969 has 2 divisors, whose sum is σ = 5181868970. Its totient is φ = 5181868968.

The previous prime is 5181868943. The next prime is 5181869003. The reversal of 5181868969 is 9698681815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5126560000 + 55308969 = 71600^2 + 7437^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5181868969 is a prime.

It is a super-2 number, since 2×5181868969² = 53703532023770245922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5181868669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2590934484 + 2590934485.

It is an arithmetic number, because the mean of its divisors is an integer number (2590934485).

Almost surely, 2^5181868969 is an apocalyptic number.

It is an amenable number.

5181868969 is a deficient number, since it is larger than the sum of its proper divisors (1).

5181868969 is an equidigital number, since it uses as much as digits as its factorization.

5181868969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 61.

The square root of 5181868969 is about 71985.1996524286. The cubic root of 5181868969 is about 1730.4623007433.

The spelling of 5181868969 in words is "five billion, one hundred eighty-one million, eight hundred sixty-eight thousand, nine hundred sixty-nine".