7399313813 has 2 divisors, whose sum is σ = 7399313814. Its totient is φ = 7399313812.

The previous prime is 7399313809. The next prime is 7399313851. The reversal of 7399313813 is 3183139937.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6912758449 + 486555364 = 83143^2 + 22058^2 .

It is a cyclic number.

It is not a de Polignac number, because 7399313813 - 2² = 7399313809 is a prime.

It is a super-3 number, since 3×7399313813³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7399313863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3699656906 + 3699656907.

It is an arithmetic number, because the mean of its divisors is an integer number (3699656907).

Almost surely, 2^7399313813 is an apocalyptic number.

It is an amenable number.

7399313813 is a deficient number, since it is larger than the sum of its proper divisors (1).

7399313813 is an equidigital number, since it uses as much as digits as its factorization.

7399313813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 47.

The square root of 7399313813 is about 86019.2641970390. The cubic root of 7399313813 is about 1948.6349256621.

The spelling of 7399313813 in words is "seven billion, three hundred ninety-nine million, three hundred thirteen thousand, eight hundred thirteen".