5145981913 has 2 divisors, whose sum is σ = 5145981914. Its totient is φ = 5145981912.

The previous prime is 5145981881. The next prime is 5145981977. The reversal of 5145981913 is 3191895415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5006553049 + 139428864 = 70757^2 + 11808^2 .

It is a cyclic number.

It is not a de Polignac number, because 5145981913 - 2⁵ = 5145981881 is a prime.

It is a super-2 number, since 2×5145981913² = 52962259697846279138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5145981013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2572990956 + 2572990957.

It is an arithmetic number, because the mean of its divisors is an integer number (2572990957).

Almost surely, 2^5145981913 is an apocalyptic number.

It is an amenable number.

5145981913 is a deficient number, since it is larger than the sum of its proper divisors (1).

5145981913 is an equidigital number, since it uses as much as digits as its factorization.

5145981913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 46.

The square root of 5145981913 is about 71735.4996706652. The cubic root of 5145981913 is about 1726.4582684331.

The spelling of 5145981913 in words is "five billion, one hundred forty-five million, nine hundred eighty-one thousand, nine hundred thirteen".