378387770 has 16 divisors (see below), whose sum is σ = 697710888. Its totient is φ = 147663360.

The previous prime is 378387769. The next prime is 378387781. The reversal of 378387770 is 77783873.

It can be written as a sum of positive squares in 4 ways, for example, as 292991689 + 85396081 = 17117^2 + 9241^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 461039 + ... + 461858.

Almost surely, 2^378387770 is an apocalyptic number.

378387770 is a deficient number, since it is larger than the sum of its proper divisors (319323118).

378387770 is a wasteful number, since it uses less digits than its factorization.

378387770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922945.

The product of its (nonzero) digits is 1382976, while the sum is 50.

The square root of 378387770 is about 19452.1919073404. The cubic root of 378387770 is about 723.2898383713.

The spelling of 378387770 in words is "three hundred seventy-eight million, three hundred eighty-seven thousand, seven hundred seventy".