519331668 has 12 divisors (see below), whose sum is σ = 1211773920. Its totient is φ = 173110552.

The previous prime is 519331649. The next prime is 519331721. The reversal of 519331668 is 866133915.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 21638808 + ... + 21638831.

It is an arithmetic number, because the mean of its divisors is an integer number (100981160).

Almost surely, 2^519331668 is an apocalyptic number.

It is an amenable number.

519331668 is an abundant number, since it is smaller than the sum of its proper divisors (692442252).

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

519331668 is a wasteful number, since it uses less digits than its factorization.

519331668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43277646 (or 43277644 counting only the distinct ones).

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

The square root of 519331668 is about 22788.8496418753. The cubic root of 519331668 is about 803.8004938016.

The spelling of 519331668 in words is "five hundred nineteen million, three hundred thirty-one thousand, six hundred sixty-eight".