378666873 has 32 divisors (see below), whose sum is σ = 606076800. Its totient is φ = 232279488.

The previous prime is 378666863. The next prime is 378666907.

378666873 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 378666873 - 2⁹ = 378666361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378666863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120243 + ... + 123351.

It is an arithmetic number, because the mean of its divisors is an integer number (18939900).

Almost surely, 2^378666873 is an apocalyptic number.

It is an amenable number.

378666873 is a deficient number, since it is larger than the sum of its proper divisors (227409927).

378666873 is a wasteful number, since it uses less digits than its factorization.

378666873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3478 (or 3472 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The square root of 378666873 is about 19459.3646607488. The cubic root of 378666873 is about 723.4676301903.

The spelling of 378666873 in words is "three hundred seventy-eight million, six hundred sixty-six thousand, eight hundred seventy-three".