378566166 has 96 divisors (see below), whose sum is σ = 906081120. Its totient is φ = 104924160.

The previous prime is 378566143. The next prime is 378566171. The reversal of 378566166 is 661665873.

It is a Curzon number.

It is a congruent 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 47 ways as a sum of consecutive naturals, for example, 456240 + ... + 457068.

It is an arithmetic number, because the mean of its divisors is an integer number (9438345).

Almost surely, 2^378566166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378566166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453040560).

378566166 is an abundant number, since it is smaller than the sum of its proper divisors (527514954).

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

378566166 is a wasteful number, since it uses less digits than its factorization.

378566166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910 (or 899 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 378566166 is about 19456.7768656579. The cubic root of 378566166 is about 723.4034887512.

The spelling of 378566166 in words is "three hundred seventy-eight million, five hundred sixty-six thousand, one hundred sixty-six".