519981992 has 32 divisors (see below), whose sum is σ = 1033796520. Its totient is φ = 244346880.

The previous prime is 519981989. The next prime is 519981997. The reversal of 519981992 is 299189915.

It can be written as a sum of positive squares in 4 ways, for example, as 364580836 + 155401156 = 19094^2 + 12466^2 .

It is not an unprimeable number, because it can be changed into a prime (519981997) 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, 109328 + ... + 113984.

Almost surely, 2^519981992 is an apocalyptic number.

It is an amenable number.

519981992 is a deficient number, since it is larger than the sum of its proper divisors (513814528).

519981992 is a wasteful number, since it uses less digits than its factorization.

519981992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5501 (or 5497 counting only the distinct ones).

The product of its digits is 524880, while the sum is 53.

The square root of 519981992 is about 22803.1136470439. The cubic root of 519981992 is about 804.1358688889.

The spelling of 519981992 in words is "five hundred nineteen million, nine hundred eighty-one thousand, nine hundred ninety-two".