381449519 has 8 divisors (see below), whose sum is σ = 440605008. Its totient is φ = 326373760.

The previous prime is 381449489. The next prime is 381449581. The reversal of 381449519 is 915944183.

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 381449519 - 2²⁸ = 113014063 is a prime.

It is a super-2 number, since 2×381449519² = 291007471090662722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381449519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381443519) 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, 1019732 + ... + 1020105.

It is an arithmetic number, because the mean of its divisors is an integer number (55075626).

Almost surely, 2^381449519 is an apocalyptic number.

381449519 is a deficient number, since it is larger than the sum of its proper divisors (59155489).

381449519 is a wasteful number, since it uses less digits than its factorization.

381449519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039865.

The product of its digits is 155520, while the sum is 44.

The square root of 381449519 is about 19530.7326795489. The cubic root of 381449519 is about 725.2354488550.

The spelling of 381449519 in words is "three hundred eighty-one million, four hundred forty-nine thousand, five hundred nineteen".