378689164 has 24 divisors (see below), whose sum is σ = 765191840. Its totient is φ = 160621056.

The previous prime is 378689147. The next prime is 378689173. The reversal of 378689164 is 461986873.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66999 + ... + 72430.

Almost surely, 2^378689164 is an apocalyptic number.

It is an amenable number.

378689164 is an abundant number, since it is smaller than the sum of its proper divisors (386502676).

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

378689164 is a wasteful number, since it uses less digits than its factorization.

378689164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139537 (or 139535 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 52.

The square root of 378689164 is about 19459.9374099713. The cubic root of 378689164 is about 723.4818260456.

The spelling of 378689164 in words is "three hundred seventy-eight million, six hundred eighty-nine thousand, one hundred sixty-four".