378678854 has 16 divisors (see below), whose sum is σ = 623911680. Its totient is φ = 171574920.

The previous prime is 378678827. The next prime is 378678863. The reversal of 378678854 is 458876873.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 378678854.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215762 + ... + 217509.

It is an arithmetic number, because the mean of its divisors is an integer number (38994480).

Almost surely, 2^378678854 is an apocalyptic number.

378678854 is a deficient number, since it is larger than the sum of its proper divisors (245232826).

378678854 is a wasteful number, since it uses less digits than its factorization.

378678854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433315.

The product of its digits is 9031680, while the sum is 56.

The square root of 378678854 is about 19459.6725049524. The cubic root of 378678854 is about 723.4752602691.

The spelling of 378678854 in words is "three hundred seventy-eight million, six hundred seventy-eight thousand, eight hundred fifty-four".