381209033 has 2 divisors, whose sum is σ = 381209034. Its totient is φ = 381209032.

The previous prime is 381208999. The next prime is 381209041. The reversal of 381209033 is 330902183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381147529 + 61504 = 19523^2 + 248^2 .

It is a cyclic number.

It is not a de Polignac number, because 381209033 - 2²⁰ = 380160457 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 381208987 and 381209005.

It is not a weakly prime, because it can be changed into another prime (381209053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190604516 + 190604517.

It is an arithmetic number, because the mean of its divisors is an integer number (190604517).

Almost surely, 2^381209033 is an apocalyptic number.

It is an amenable number.

381209033 is a deficient number, since it is larger than the sum of its proper divisors (1).

381209033 is an equidigital number, since it uses as much as digits as its factorization.

381209033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 381209033 is about 19524.5751042116. The cubic root of 381209033 is about 725.0830078561.

The spelling of 381209033 in words is "three hundred eighty-one million, two hundred nine thousand, thirty-three".