378983866 has 8 divisors (see below), whose sum is σ = 586813824. Its totient is φ = 183379260.

The previous prime is 378983863. The next prime is 378983909. The reversal of 378983866 is 668389873.

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

It is a self number, because there is not a number n which added to its sum of digits gives 378983866.

It is not an unprimeable number, because it can be changed into a prime (378983863) 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 3 ways as a sum of consecutive naturals, for example, 3056260 + ... + 3056383.

It is an arithmetic number, because the mean of its divisors is an integer number (73351728).

Almost surely, 2^378983866 is an apocalyptic number.

378983866 is a deficient number, since it is larger than the sum of its proper divisors (207829958).

378983866 is a wasteful number, since it uses less digits than its factorization.

378983866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6112676.

The product of its digits is 10450944, while the sum is 58.

The square root of 378983866 is about 19467.5079555653. The cubic root of 378983866 is about 723.6694524484.

The spelling of 378983866 in words is "three hundred seventy-eight million, nine hundred eighty-three thousand, eight hundred sixty-six".