378638334 has 32 divisors (see below), whose sum is σ = 845713440. Its totient is φ = 125568576.

The previous prime is 378638329. The next prime is 378638369. The reversal of 378638334 is 433836873.

378638334 is a `hidden beast` number, since 3 + 7 + 8 + 638 + 3 + 3 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 378638334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7159 + ... + 28434.

It is an arithmetic number, because the mean of its divisors is an integer number (26428545).

Almost surely, 2^378638334 is an apocalyptic number.

378638334 is an abundant number, since it is smaller than the sum of its proper divisors (467075106).

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

378638334 is a wasteful number, since it uses less digits than its factorization.

378638334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35801 (or 35795 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The square root of 378638334 is about 19458.6313496094. The cubic root of 378638334 is about 723.4494545299.

The spelling of 378638334 in words is "three hundred seventy-eight million, six hundred thirty-eight thousand, three hundred thirty-four".