513669318 has 32 divisors (see below), whose sum is σ = 1075034112. Its totient is φ = 163425600.

The previous prime is 513669311. The next prime is 513669353. The reversal of 513669318 is 813966315.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 513669318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513669311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5338 + ... + 32493.

It is an arithmetic number, because the mean of its divisors is an integer number (33594816).

Almost surely, 2^513669318 is an apocalyptic number.

513669318 is an abundant number, since it is smaller than the sum of its proper divisors (561364794).

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

513669318 is a wasteful number, since it uses less digits than its factorization.

513669318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37940.

The product of its digits is 116640, while the sum is 42.

The square root of 513669318 is about 22664.2740452899. The cubic root of 513669318 is about 800.8684932664.

The spelling of 513669318 in words is "five hundred thirteen million, six hundred sixty-nine thousand, three hundred eighteen".