381450733 has 2 divisors, whose sum is σ = 381450734. Its totient is φ = 381450732.

The previous prime is 381450683. The next prime is 381450749. The reversal of 381450733 is 337054183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248440644 + 133010089 = 15762^2 + 11533^2 .

It is an emirp because it is prime and its reverse (337054183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381450733 - 2¹³ = 381442541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381459733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190725366 + 190725367.

It is an arithmetic number, because the mean of its divisors is an integer number (190725367).

Almost surely, 2^381450733 is an apocalyptic number.

It is an amenable number.

381450733 is a deficient number, since it is larger than the sum of its proper divisors (1).

381450733 is an equidigital number, since it uses as much as digits as its factorization.

381450733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 381450733 is about 19530.7637587474. The cubic root of 381450733 is about 725.2362182316.

The spelling of 381450733 in words is "three hundred eighty-one million, four hundred fifty thousand, seven hundred thirty-three".