378648389 has 8 divisors (see below), whose sum is σ = 447663360. Its totient is φ = 313364016.

The previous prime is 378648383. The next prime is 378648401. The reversal of 378648389 is 983846873.

It is a happy number.

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

It is not a de Polignac number, because 378648389 - 2⁴ = 378648373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378648383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932429 + ... + 932834.

It is an arithmetic number, because the mean of its divisors is an integer number (55957920).

Almost surely, 2^378648389 is an apocalyptic number.

It is an amenable number.

378648389 is a deficient number, since it is larger than the sum of its proper divisors (69014971).

378648389 is a wasteful number, since it uses less digits than its factorization.

378648389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865299.

The product of its digits is 6967296, while the sum is 56.

The square root of 378648389 is about 19458.8897165280. The cubic root of 378648389 is about 723.4558583716.

The spelling of 378648389 in words is "three hundred seventy-eight million, six hundred forty-eight thousand, three hundred eighty-nine".