381448017 has 6 divisors (see below), whose sum is σ = 550980482. Its totient is φ = 254298672.

The previous prime is 381448003. The next prime is 381448019. The reversal of 381448017 is 710844183.

It can be written as a sum of positive squares in only one way, i.e., 342398016 + 39050001 = 18504^2 + 6249^2 .

It is not a de Polignac number, because 381448017 - 2⁶ = 381447953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381448019) 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 5 ways as a sum of consecutive naturals, for example, 21191548 + ... + 21191565.

Almost surely, 2^381448017 is an apocalyptic number.

It is an amenable number.

381448017 is a deficient number, since it is larger than the sum of its proper divisors (169532465).

381448017 is a wasteful number, since it uses less digits than its factorization.

381448017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42383119 (or 42383116 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 381448017 is about 19530.6942272926. The cubic root of 381448017 is about 725.2344969553.

The spelling of 381448017 in words is "three hundred eighty-one million, four hundred forty-eight thousand, seventeen".