513678386 has 8 divisors (see below), whose sum is σ = 829788204. Its totient is φ = 237082320.

The previous prime is 513678383. The next prime is 513678413. The reversal of 513678386 is 683876315.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 511619161 + 2059225 = 22619^2 + 1435^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 513678386.

It is not an unprimeable number, because it can be changed into a prime (513678383) 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, 9878405 + ... + 9878456.

Almost surely, 2^513678386 is an apocalyptic number.

513678386 is a deficient number, since it is larger than the sum of its proper divisors (316109818).

513678386 is a wasteful number, since it uses less digits than its factorization.

513678386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19756876.

The product of its digits is 725760, while the sum is 47.

The square root of 513678386 is about 22664.4740949354. The cubic root of 513678386 is about 800.8732059175.

The spelling of 513678386 in words is "five hundred thirteen million, six hundred seventy-eight thousand, three hundred eighty-six".