513456794 has 4 divisors (see below), whose sum is σ = 770185194. Its totient is φ = 256728396.

The previous prime is 513456791. The next prime is 513456829. The reversal of 513456794 is 497654315.

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

It can be written as a sum of positive squares in only one way, i.e., 510082225 + 3374569 = 22585^2 + 1837^2 .

It is not an unprimeable number, because it can be changed into a prime (513456791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128364197 + ... + 128364200.

Almost surely, 2^513456794 is an apocalyptic number.

513456794 is a deficient number, since it is larger than the sum of its proper divisors (256728400).

513456794 is a wasteful number, since it uses less digits than its factorization.

513456794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256728399.

The product of its digits is 453600, while the sum is 44.

The square root of 513456794 is about 22659.5850359180. The cubic root of 513456794 is about 800.7580283893.

The spelling of 513456794 in words is "five hundred thirteen million, four hundred fifty-six thousand, seven hundred ninety-four".