513738868 has 24 divisors (see below), whose sum is σ = 910477568. Its totient is φ = 253617696.

The previous prime is 513738847. The next prime is 513738893. The reversal of 513738868 is 868837315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152005 + ... + 155347.

Almost surely, 2^513738868 is an apocalyptic number.

It is an amenable number.

513738868 is a deficient number, since it is larger than the sum of its proper divisors (396738700).

513738868 is a wasteful number, since it uses less digits than its factorization.

513738868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823 (or 3821 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The square root of 513738868 is about 22665.8083464941. The cubic root of 513738868 is about 800.9046370708.

The spelling of 513738868 in words is "five hundred thirteen million, seven hundred thirty-eight thousand, eight hundred sixty-eight".