381009841 has 8 divisors (see below), whose sum is σ = 382866120. Its totient is φ = 379158528.

The previous prime is 381009829. The next prime is 381009847. The reversal of 381009841 is 148900183.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6780816 + 374229025 = 2604^2 + 19345^2 .

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 381009841 - 2²³ = 372621233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381009797 and 381009806.

It is not an unprimeable number, because it can be changed into a prime (381009847) 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, 312465 + ... + 313681.

It is an arithmetic number, because the mean of its divisors is an integer number (47858265).

Almost surely, 2^381009841 is an apocalyptic number.

It is an amenable number.

381009841 is a deficient number, since it is larger than the sum of its proper divisors (1856279).

381009841 is a wasteful number, since it uses less digits than its factorization.

381009841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 381009841 is about 19519.4733791668. The cubic root of 381009841 is about 724.9566940443.

The spelling of 381009841 in words is "three hundred eighty-one million, nine thousand, eight hundred forty-one".