378446841 has 12 divisors (see below), whose sum is σ = 561420132. Its totient is φ = 245478816.

The previous prime is 378446837. The next prime is 378446863. The reversal of 378446841 is 148644873.

It can be written as a sum of positive squares in 2 ways, for example, as 366914025 + 11532816 = 19155^2 + 3396^2 .

It is not a de Polignac number, because 378446841 - 2² = 378446837 is a prime.

It is a super-2 number, since 2×378446841² = 286444022925758562, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (378446141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 567906 + ... + 568571.

It is an arithmetic number, because the mean of its divisors is an integer number (46785011).

Almost surely, 2^378446841 is an apocalyptic number.

It is an amenable number.

378446841 is a deficient number, since it is larger than the sum of its proper divisors (182973291).

378446841 is a wasteful number, since it uses less digits than its factorization.

378446841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136520 (or 1136517 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 378446841 is about 19453.7102116794. The cubic root of 378446841 is about 723.3274745692.

It can be divided in two parts, 3784 and 46841, that added together give a 4-th power (50625 = 15⁴).

The spelling of 378446841 in words is "three hundred seventy-eight million, four hundred forty-six thousand, eight hundred forty-one".