378223994 has 16 divisors (see below), whose sum is σ = 616462080. Its totient is φ = 173378880.

The previous prime is 378223991. The next prime is 378224009. The reversal of 378223994 is 499322873.

It is not an unprimeable number, because it can be changed into a prime (378223991) 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 in 7 ways as a sum of consecutive naturals, for example, 159359 + ... + 161714.

It is an arithmetic number, because the mean of its divisors is an integer number (38528880).

Almost surely, 2^378223994 is an apocalyptic number.

378223994 is a deficient number, since it is larger than the sum of its proper divisors (238238086).

378223994 is a wasteful number, since it uses less digits than its factorization.

378223994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321125.

The product of its digits is 653184, while the sum is 47.

The square root of 378223994 is about 19447.9817461864. The cubic root of 378223994 is about 723.1854704710.

The spelling of 378223994 in words is "three hundred seventy-eight million, two hundred twenty-three thousand, nine hundred ninety-four".