381326049 has 28 divisors (see below), whose sum is σ = 615721876. Its totient is φ = 234656352.

The previous prime is 381326047. The next prime is 381326051. The reversal of 381326049 is 940623183.

381326049 is a `hidden beast` number, since 38 + 13 + 2 + 604 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (381326047) and next prime (381326051).

It can be written as a sum of positive squares in 2 ways, for example, as 167961600 + 213364449 = 12960^2 + 14607^2 .

It is not a de Polignac number, because 381326049 - 2¹ = 381326047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381326041) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 10642 + ... + 29595.

It is an arithmetic number, because the mean of its divisors is an integer number (21990067).

Almost surely, 2^381326049 is an apocalyptic number.

381326049 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

381326049 is a deficient number, since it is larger than the sum of its proper divisors (234395827).

381326049 is an equidigital number, since it uses as much as digits as its factorization.

381326049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40268 (or 40253 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 381326049 is about 19527.5715079986. The cubic root of 381326049 is about 725.1571908072.

The spelling of 381326049 in words is "three hundred eighty-one million, three hundred twenty-six thousand, forty-nine".