683149813 has 2 divisors, whose sum is σ = 683149814. Its totient is φ = 683149812.

The previous prime is 683149801. The next prime is 683149829. The reversal of 683149813 is 318941386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368371249 + 314778564 = 19193^2 + 17742^2 .

It is a cyclic number.

It is not a de Polignac number, because 683149813 - 2²⁹ = 146278901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 683149813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (683149853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341574906 + 341574907.

It is an arithmetic number, because the mean of its divisors is an integer number (341574907).

Almost surely, 2^683149813 is an apocalyptic number.

It is an amenable number.

683149813 is a deficient number, since it is larger than the sum of its proper divisors (1).

683149813 is an equidigital number, since it uses as much as digits as its factorization.

683149813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 683149813 is about 26137.1347511543. The cubic root of 683149813 is about 880.7216072363.

It can be divided in two parts, 6831 and 49813, that added together give a square (56644 = 238²).

The spelling of 683149813 in words is "six hundred eighty-three million, one hundred forty-nine thousand, eight hundred thirteen".