513890913 has 8 divisors (see below), whose sum is σ = 686864800. Its totient is φ = 341755488.

The previous prime is 513890879. The next prime is 513890941. The reversal of 513890913 is 319098315.

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

It is not a de Polignac number, because 513890913 - 2⁶ = 513890849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513890953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208183 + ... + 210636.

It is an arithmetic number, because the mean of its divisors is an integer number (85858100).

Almost surely, 2^513890913 is an apocalyptic number.

It is an amenable number.

513890913 is a deficient number, since it is larger than the sum of its proper divisors (172973887).

513890913 is a wasteful number, since it uses less digits than its factorization.

513890913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419231.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 513890913 is about 22669.1621591977. The cubic root of 513890913 is about 800.9836405891.

The spelling of 513890913 in words is "five hundred thirteen million, eight hundred ninety thousand, nine hundred thirteen".