378418644 has 36 divisors (see below), whose sum is σ = 960392160. Its totient is φ = 125634000.

The previous prime is 378418627. The next prime is 378418673. The reversal of 378418644 is 446814873.

378418644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 378418644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11904 + ... + 29975.

It is an arithmetic number, because the mean of its divisors is an integer number (26677560).

Almost surely, 2^378418644 is an apocalyptic number.

It is an amenable number.

378418644 is an abundant number, since it is smaller than the sum of its proper divisors (581973516).

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

378418644 is a wasteful number, since it uses less digits than its factorization.

378418644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42140 (or 42135 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 378418644 is about 19452.9854778129. The cubic root of 378418644 is about 723.3095097639.

The spelling of 378418644 in words is "three hundred seventy-eight million, four hundred eighteen thousand, six hundred forty-four".