381798349 has 4 divisors (see below), whose sum is σ = 381892860. Its totient is φ = 381703840.

The previous prime is 381798317. The next prime is 381798397. The reversal of 381798349 is 943897183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 323352324 + 58446025 = 17982^2 + 7645^2 .

It is a cyclic number.

It is not a de Polignac number, because 381798349 - 2⁵ = 381798317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381798296 and 381798305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381798049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40912 + ... + 49369.

It is an arithmetic number, because the mean of its divisors is an integer number (95473215).

Almost surely, 2^381798349 is an apocalyptic number.

It is an amenable number.

381798349 is a deficient number, since it is larger than the sum of its proper divisors (94511).

381798349 is an equidigital number, since it uses as much as digits as its factorization.

381798349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94510.

The product of its digits is 1306368, while the sum is 52.

The square root of 381798349 is about 19539.6609233630. The cubic root of 381798349 is about 725.4564538998.

The spelling of 381798349 in words is "three hundred eighty-one million, seven hundred ninety-eight thousand, three hundred forty-nine".