378782745 has 64 divisors (see below), whose sum is σ = 695513088. Its totient is φ = 174240000.

The previous prime is 378782737. The next prime is 378782749. The reversal of 378782745 is 547287873.

It is a happy number.

It is not a de Polignac number, because 378782745 - 2³ = 378782737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378782749) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 572715 + ... + 573375.

It is an arithmetic number, because the mean of its divisors is an integer number (10867392).

Almost surely, 2^378782745 is an apocalyptic number.

It is an amenable number.

378782745 is a deficient number, since it is larger than the sum of its proper divisors (316730343).

378782745 is a wasteful number, since it uses less digits than its factorization.

378782745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854.

The product of its digits is 2634240, while the sum is 51.

The square root of 378782745 is about 19462.3417141926. The cubic root of 378782745 is about 723.5414163227.

The spelling of 378782745 in words is "three hundred seventy-eight million, seven hundred eighty-two thousand, seven hundred forty-five".