378224533 has 2 divisors, whose sum is σ = 378224534. Its totient is φ = 378224532.

The previous prime is 378224527. The next prime is 378224573. The reversal of 378224533 is 335422873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364733604 + 13490929 = 19098^2 + 3673^2 .

It is an emirp because it is prime and its reverse (335422873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378224533 - 2²⁵ = 344670101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 378224492 and 378224501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378224573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189112266 + 189112267.

It is an arithmetic number, because the mean of its divisors is an integer number (189112267).

Almost surely, 2^378224533 is an apocalyptic number.

It is an amenable number.

378224533 is a deficient number, since it is larger than the sum of its proper divisors (1).

378224533 is an equidigital number, since it uses as much as digits as its factorization.

378224533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 37.

The square root of 378224533 is about 19447.9956036605. The cubic root of 378224533 is about 723.1858140036.

The spelling of 378224533 in words is "three hundred seventy-eight million, two hundred twenty-four thousand, five hundred thirty-three".