378887864 has 16 divisors (see below), whose sum is σ = 712356000. Its totient is φ = 188926272.

The previous prime is 378887851. The next prime is 378887939. The reversal of 378887864 is 468788873.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61589 + ... + 67460.

It is an arithmetic number, because the mean of its divisors is an integer number (44522250).

Almost surely, 2^378887864 is an apocalyptic number.

It is an amenable number.

378887864 is a deficient number, since it is larger than the sum of its proper divisors (333468136).

378887864 is a wasteful number, since it uses less digits than its factorization.

378887864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129422 (or 129418 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 59.

The square root of 378887864 is about 19465.0421011618. The cubic root of 378887864 is about 723.6083420353.

The spelling of 378887864 in words is "three hundred seventy-eight million, eight hundred eighty-seven thousand, eight hundred sixty-four".