513857930 has 8 divisors (see below), whose sum is σ = 924944292. Its totient is φ = 205543168.

The previous prime is 513857917. The next prime is 513857941. The reversal of 513857930 is 39758315.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 420291001 + 93566929 = 20501^2 + 9673^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25692887 + ... + 25692906.

Almost surely, 2^513857930 is an apocalyptic number.

513857930 is a deficient number, since it is larger than the sum of its proper divisors (411086362).

513857930 is a wasteful number, since it uses less digits than its factorization.

513857930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51385800.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 513857930 is about 22668.4346614406. The cubic root of 513857930 is about 800.9665037429.

The spelling of 513857930 in words is "five hundred thirteen million, eight hundred fifty-seven thousand, nine hundred thirty".