378309826 has 8 divisors (see below), whose sum is σ = 570745404. Its totient is φ = 188061360.

The previous prime is 378309803. The next prime is 378309851. The reversal of 378309826 is 628903873.

378309826 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 378263601 + 46225 = 19449^2 + 215^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546345 + ... + 547036.

Almost surely, 2^378309826 is an apocalyptic number.

378309826 is a deficient number, since it is larger than the sum of its proper divisors (192435578).

378309826 is a wasteful number, since it uses less digits than its factorization.

378309826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093556.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 378309826 is about 19450.1883281371. The cubic root of 378309826 is about 723.2401715313.

The spelling of 378309826 in words is "three hundred seventy-eight million, three hundred nine thousand, eight hundred twenty-six".