749807508913 has 2 divisors, whose sum is σ = 749807508914. Its totient is φ = 749807508912.

The previous prime is 749807508911. The next prime is 749807509021. The reversal of 749807508913 is 319805708947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 722335109409 + 27472399504 = 849903^2 + 165748^2 .

It is an emirp because it is prime and its reverse (319805708947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 749807508913 - 2¹ = 749807508911 is a prime.

It is a super-2 number, since 2×749807508913² (a number of 25 digits) contains 22 as substring.

Together with 749807508911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (749807508911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374903754456 + 374903754457.

It is an arithmetic number, because the mean of its divisors is an integer number (374903754457).

Almost surely, 2^749807508913 is an apocalyptic number.

It is an amenable number.

749807508913 is a deficient number, since it is larger than the sum of its proper divisors (1).

749807508913 is an equidigital number, since it uses as much as digits as its factorization.

749807508913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 61.

The spelling of 749807508913 in words is "seven hundred forty-nine billion, eight hundred seven million, five hundred eight thousand, nine hundred thirteen".