993514813 has 2 divisors, whose sum is σ = 993514814. Its totient is φ = 993514812.

The previous prime is 993514789. The next prime is 993514817. The reversal of 993514813 is 318415399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 794225124 + 199289689 = 28182^2 + 14117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-993514813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 993514813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993514817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496757406 + 496757407.

It is an arithmetic number, because the mean of its divisors is an integer number (496757407).

Almost surely, 2^993514813 is an apocalyptic number.

It is an amenable number.

993514813 is a deficient number, since it is larger than the sum of its proper divisors (1).

993514813 is an equidigital number, since it uses as much as digits as its factorization.

993514813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 43.

The square root of 993514813 is about 31520.0700030949. The cubic root of 993514813 is about 997.8335810181.

The spelling of 993514813 in words is "nine hundred ninety-three million, five hundred fourteen thousand, eight hundred thirteen".