378911446 has 4 divisors (see below), whose sum is σ = 568367172. Its totient is φ = 189455722.

The previous prime is 378911441. The next prime is 378911447. The reversal of 378911446 is 644119873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644119873 = 103 ⋅6253591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378911441) 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, 94727860 + ... + 94727863.

It is an arithmetic number, because the mean of its divisors is an integer number (142091793).

Almost surely, 2^378911446 is an apocalyptic number.

378911446 is a deficient number, since it is larger than the sum of its proper divisors (189455726).

378911446 is a wasteful number, since it uses less digits than its factorization.

378911446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189455725.

The product of its digits is 145152, while the sum is 43.

The square root of 378911446 is about 19465.6478443436. The cubic root of 378911446 is about 723.6233541972.

The spelling of 378911446 in words is "three hundred seventy-eight million, nine hundred eleven thousand, four hundred forty-six".