519380381 has 8 divisors (see below), whose sum is σ = 559509720. Its totient is φ = 479276352.

The previous prime is 519380377. The next prime is 519380383. The reversal of 519380381 is 183083915.

It can be written as a sum of positive squares in 4 ways, for example, as 40208281 + 479172100 = 6341^2 + 21890^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 519380381 - 2² = 519380377 is a prime.

It is a super-2 number, since 2×519380381² = 539511960335410322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (519380383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78311 + ... + 84683.

It is an arithmetic number, because the mean of its divisors is an integer number (69938715).

Almost surely, 2^519380381 is an apocalyptic number.

It is an amenable number.

519380381 is a deficient number, since it is larger than the sum of its proper divisors (40129339).

519380381 is a wasteful number, since it uses less digits than its factorization.

519380381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12655.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 519380381 is about 22789.9184070501. The cubic root of 519380381 is about 803.8256250178.

The spelling of 519380381 in words is "five hundred nineteen million, three hundred eighty thousand, three hundred eighty-one".