378478365 has 16 divisors (see below), whose sum is σ = 621932928. Its totient is φ = 196399296.

The previous prime is 378478319. The next prime is 378478369. The reversal of 378478365 is 563874873.

It is not a de Polignac number, because 378478365 - 2⁶ = 378478301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378478369) 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 15 ways as a sum of consecutive naturals, for example, 340417 + ... + 341526.

It is an arithmetic number, because the mean of its divisors is an integer number (38870808).

Almost surely, 2^378478365 is an apocalyptic number.

It is an amenable number.

378478365 is a deficient number, since it is larger than the sum of its proper divisors (243454563).

378478365 is a wasteful number, since it uses less digits than its factorization.

378478365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681988.

The product of its digits is 3386880, while the sum is 51.

The square root of 378478365 is about 19454.5204258548. The cubic root of 378478365 is about 723.3475580082.

The spelling of 378478365 in words is "three hundred seventy-eight million, four hundred seventy-eight thousand, three hundred sixty-five".