381444814 has 8 divisors (see below), whose sum is σ = 575132400. Its totient is φ = 189734016.

The previous prime is 381444799. The next prime is 381444821. The reversal of 381444814 is 418444183.

It is a happy number.

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

It is a super-2 number, since 2×381444814² = 291000292254989192, which contains 22 as substring.

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, 493714 + ... + 494485.

It is an arithmetic number, because the mean of its divisors is an integer number (71891550).

Almost surely, 2^381444814 is an apocalyptic number.

381444814 is a deficient number, since it is larger than the sum of its proper divisors (193687586).

381444814 is a wasteful number, since it uses less digits than its factorization.

381444814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988394.

The product of its digits is 49152, while the sum is 37.

The square root of 381444814 is about 19530.6122279871. The cubic root of 381444814 is about 725.2324670303.

Adding to 381444814 its reverse (418444183), we get a palindrome (799888997).

The spelling of 381444814 in words is "three hundred eighty-one million, four hundred forty-four thousand, eight hundred fourteen".