378891984 has 40 divisors (see below), whose sum is σ = 994857952. Its totient is φ = 124225920.

The previous prime is 378891967. The next prime is 378892027. The reversal of 378891984 is 489198873.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61774 + ... + 67629.

Almost surely, 2^378891984 is an apocalyptic number.

It is an amenable number.

378891984 is an abundant number, since it is smaller than the sum of its proper divisors (615965968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378891984 is a wasteful number, since it uses less digits than its factorization.

378891984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129475 (or 129469 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 57.

The square root of 378891984 is about 19465.1479316238. The cubic root of 378891984 is about 723.6109648479.

The spelling of 378891984 in words is "three hundred seventy-eight million, eight hundred ninety-one thousand, nine hundred eighty-four".