378142866 has 24 divisors (see below), whose sum is σ = 867504924. Its totient is φ = 118632960.

The previous prime is 378142829. The next prime is 378142873. The reversal of 378142866 is 668241873.

It can be written as a sum of positive squares in 2 ways, for example, as 362102841 + 16040025 = 19029^2 + 4005^2 .

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, 617575 + ... + 618186.

Almost surely, 2^378142866 is an apocalyptic number.

378142866 is an abundant number, since it is smaller than the sum of its proper divisors (489362058).

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

378142866 is a wasteful number, since it uses less digits than its factorization.

378142866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235786 (or 1235783 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 378142866 is about 19445.8958651948. The cubic root of 378142866 is about 723.1337596796.

The spelling of 378142866 in words is "three hundred seventy-eight million, one hundred forty-two thousand, eight hundred sixty-six".