378966845 has 4 divisors (see below), whose sum is σ = 454760220. Its totient is φ = 303173472.

The previous prime is 378966829. The next prime is 378966851. The reversal of 378966845 is 548669873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67338436 + 311628409 = 8206^2 + 17653^2 .

It is a cyclic number.

It is not a de Polignac number, because 378966845 - 2⁴ = 378966829 is a prime.

It is a congruent number.

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, 37896680 + ... + 37896689.

It is an arithmetic number, because the mean of its divisors is an integer number (113690055).

Almost surely, 2^378966845 is an apocalyptic number.

It is an amenable number.

378966845 is a deficient number, since it is larger than the sum of its proper divisors (75793375).

378966845 is an equidigital number, since it uses as much as digits as its factorization.

378966845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75793374.

The product of its digits is 8709120, while the sum is 56.

The square root of 378966845 is about 19467.0707863304. The cubic root of 378966845 is about 723.6586184233.

The spelling of 378966845 in words is "three hundred seventy-eight million, nine hundred sixty-six thousand, eight hundred forty-five".