381272833 has 2 divisors, whose sum is σ = 381272834. Its totient is φ = 381272832.

The previous prime is 381272777. The next prime is 381272893. The reversal of 381272833 is 338272183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246898369 + 134374464 = 15713^2 + 11592^2 .

It is an emirp because it is prime and its reverse (338272183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381272833 - 2²⁵ = 347718401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 381272792 and 381272801.

It is not a weakly prime, because it can be changed into another prime (381272893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190636416 + 190636417.

It is an arithmetic number, because the mean of its divisors is an integer number (190636417).

Almost surely, 2^381272833 is an apocalyptic number.

It is an amenable number.

381272833 is a deficient number, since it is larger than the sum of its proper divisors (1).

381272833 is an equidigital number, since it uses as much as digits as its factorization.

381272833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 381272833 is about 19526.2088742285. The cubic root of 381272833 is about 725.1234561066.

The spelling of 381272833 in words is "three hundred eighty-one million, two hundred seventy-two thousand, eight hundred thirty-three".