378894778 has 8 divisors (see below), whose sum is σ = 593052768. Its totient is φ = 181210524.

The previous prime is 378894767. The next prime is 378894779. The reversal of 378894778 is 877498873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×378894778² = 287122505591338568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (378894779) 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 3 ways as a sum of consecutive naturals, for example, 4118376 + ... + 4118467.

It is an arithmetic number, because the mean of its divisors is an integer number (74131596).

Almost surely, 2^378894778 is an apocalyptic number.

378894778 is a deficient number, since it is larger than the sum of its proper divisors (214157990).

378894778 is a wasteful number, since it uses less digits than its factorization.

378894778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8236868.

The product of its digits is 18966528, while the sum is 61.

The square root of 378894778 is about 19465.2197007894. The cubic root of 378894778 is about 723.6127435114.

The spelling of 378894778 in words is "three hundred seventy-eight million, eight hundred ninety-four thousand, seven hundred seventy-eight".