378128386 has 16 divisors (see below), whose sum is σ = 606836160. Its totient is φ = 176176080.

The previous prime is 378128351. The next prime is 378128423. The reversal of 378128386 is 683821873.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79246 + ... + 83881.

It is an arithmetic number, because the mean of its divisors is an integer number (37927260).

Almost surely, 2^378128386 is an apocalyptic number.

378128386 is a deficient number, since it is larger than the sum of its proper divisors (228707774).

378128386 is a wasteful number, since it uses less digits than its factorization.

378128386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163209.

The product of its digits is 387072, while the sum is 46.

The square root of 378128386 is about 19445.5235465646. The cubic root of 378128386 is about 723.1245293847.

The spelling of 378128386 in words is "three hundred seventy-eight million, one hundred twenty-eight thousand, three hundred eighty-six".