513816894 has 24 divisors (see below), whose sum is σ = 1114504560. Its totient is φ = 171082368.

The previous prime is 513816893. The next prime is 513816907. The reversal of 513816894 is 498618315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513816893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1359 + ... + 32085.

It is an arithmetic number, because the mean of its divisors is an integer number (46437690).

Almost surely, 2^513816894 is an apocalyptic number.

513816894 is an abundant number, since it is smaller than the sum of its proper divisors (600687666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513816894 is a wasteful number, since it uses less digits than its factorization.

513816894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31664 (or 31661 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 513816894 is about 22667.5295080871. The cubic root of 513816894 is about 800.9451818077.

The spelling of 513816894 in words is "five hundred thirteen million, eight hundred sixteen thousand, eight hundred ninety-four".