381482217 has 10 divisors (see below), whose sum is σ = 569868618. Its totient is φ = 254321424.

The previous prime is 381482207. The next prime is 381482263. The reversal of 381482217 is 712284183.

It can be written as a sum of positive squares in only one way, i.e., 285069456 + 96412761 = 16884^2 + 9819^2 .

It is not a de Polignac number, because 381482217 - 2⁴ = 381482201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381482207) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2354748 + ... + 2354909.

Almost surely, 2^381482217 is an apocalyptic number.

It is an amenable number.

381482217 is a deficient number, since it is larger than the sum of its proper divisors (188386401).

381482217 is an equidigital number, since it uses as much as digits as its factorization.

381482217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709669 (or 4709660 counting only the distinct ones).

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

The square root of 381482217 is about 19531.5697525826. The cubic root of 381482217 is about 725.2561707505.

The spelling of 381482217 in words is "three hundred eighty-one million, four hundred eighty-two thousand, two hundred seventeen".