381849519 has 8 divisors (see below), whose sum is σ = 531268992. Its totient is φ = 243498200.

The previous prime is 381849511. The next prime is 381849539. The reversal of 381849519 is 915948183.

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 381849519 - 2³ = 381849511 is a prime.

It is a super-2 number, since 2×381849519² = 291618110321062722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381849511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2766957 + ... + 2767094.

It is an arithmetic number, because the mean of its divisors is an integer number (66408624).

Almost surely, 2^381849519 is an apocalyptic number.

381849519 is a deficient number, since it is larger than the sum of its proper divisors (149419473).

381849519 is a wasteful number, since it uses less digits than its factorization.

381849519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5534077.

The product of its digits is 311040, while the sum is 48.

The square root of 381849519 is about 19540.9702676198. The cubic root of 381849519 is about 725.4888618874.

The spelling of 381849519 in words is "three hundred eighty-one million, eight hundred forty-nine thousand, five hundred nineteen".