378338449 has 2 divisors, whose sum is σ = 378338450. Its totient is φ = 378338448.

The previous prime is 378338399. The next prime is 378338459. The reversal of 378338449 is 944833873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376088449 + 2250000 = 19393^2 + 1500^2 .

It is a cyclic number.

It is not a de Polignac number, because 378338449 - 2¹¹ = 378336401 is a prime.

It is not a weakly prime, because it can be changed into another prime (378338459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189169224 + 189169225.

It is an arithmetic number, because the mean of its divisors is an integer number (189169225).

Almost surely, 2^378338449 is an apocalyptic number.

It is an amenable number.

378338449 is a deficient number, since it is larger than the sum of its proper divisors (1).

378338449 is an equidigital number, since it uses as much as digits as its factorization.

378338449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 49.

The square root of 378338449 is about 19450.9241168640. The cubic root of 378338449 is about 723.2584112385.

The spelling of 378338449 in words is "three hundred seventy-eight million, three hundred thirty-eight thousand, four hundred forty-nine".