381341665 has 8 divisors (see below), whose sum is σ = 461660328. Its totient is φ = 302373120.

The previous prime is 381341659. The next prime is 381341699. The reversal of 381341665 is 566143183.

It can be written as a sum of positive squares in 4 ways, for example, as 45279441 + 336062224 = 6729^2 + 18332^2 .

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

It is not a de Polignac number, because 381341665 - 2²³ = 372953057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336906 + ... + 338035.

It is an arithmetic number, because the mean of its divisors is an integer number (57707541).

Almost surely, 2^381341665 is an apocalyptic number.

It is an amenable number.

381341665 is a deficient number, since it is larger than the sum of its proper divisors (80318663).

381341665 is a wasteful number, since it uses less digits than its factorization.

381341665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675059.

The product of its digits is 51840, while the sum is 37.

The square root of 381341665 is about 19527.9713488114. The cubic root of 381341665 is about 725.1670895104.

The spelling of 381341665 in words is "three hundred eighty-one million, three hundred forty-one thousand, six hundred sixty-five".