513463793 has 4 divisors (see below), whose sum is σ = 518174580. Its totient is φ = 508753008.

The previous prime is 513463747. The next prime is 513463831. The reversal of 513463793 is 397364315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 313750369 + 199713424 = 17713^2 + 14132^2 .

It is a cyclic number.

It is not a de Polignac number, because 513463793 - 2¹⁰ = 513462769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513463793.

It is not an unprimeable number, because it can be changed into a prime (513463723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2355230 + ... + 2355447.

It is an arithmetic number, because the mean of its divisors is an integer number (129543645).

Almost surely, 2^513463793 is an apocalyptic number.

It is an amenable number.

513463793 is a deficient number, since it is larger than the sum of its proper divisors (4710787).

513463793 is a wasteful number, since it uses less digits than its factorization.

513463793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4710786.

The product of its digits is 204120, while the sum is 41.

The square root of 513463793 is about 22659.7394733479. The cubic root of 513463793 is about 800.7616667870.

The spelling of 513463793 in words is "five hundred thirteen million, four hundred sixty-three thousand, seven hundred ninety-three".