5198668913 has 2 divisors, whose sum is σ = 5198668914. Its totient is φ = 5198668912.

The previous prime is 5198668877. The next prime is 5198668931. The reversal of 5198668913 is 3198668915.

Together with next prime (5198668931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3786187024 + 1412481889 = 61532^2 + 37583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5198668913 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5198668933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2599334456 + 2599334457.

It is an arithmetic number, because the mean of its divisors is an integer number (2599334457).

Almost surely, 2^5198668913 is an apocalyptic number.

It is an amenable number.

5198668913 is a deficient number, since it is larger than the sum of its proper divisors (1).

5198668913 is an equidigital number, since it uses as much as digits as its factorization.

5198668913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 56.

The square root of 5198668913 is about 72101.7954908198. The cubic root of 5198668913 is about 1732.3303724753.

The spelling of 5198668913 in words is "five billion, one hundred ninety-eight million, six hundred sixty-eight thousand, nine hundred thirteen".