378715565 has 8 divisors (see below), whose sum is σ = 465543288. Its totient is φ = 295582720.

The previous prime is 378715549. The next prime is 378715573. The reversal of 378715565 is 565517873.

It can be written as a sum of positive squares in 4 ways, for example, as 724201 + 377991364 = 851^2 + 19442^2 .

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

It is not a de Polignac number, because 378715565 - 2⁴ = 378715549 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 923492 + ... + 923901.

It is an arithmetic number, because the mean of its divisors is an integer number (58192911).

Almost surely, 2^378715565 is an apocalyptic number.

It is an amenable number.

378715565 is a deficient number, since it is larger than the sum of its proper divisors (86827723).

378715565 is a wasteful number, since it uses less digits than its factorization.

378715565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847439.

The product of its digits is 882000, while the sum is 47.

The square root of 378715565 is about 19460.6157405155. The cubic root of 378715565 is about 723.4986386030.

The spelling of 378715565 in words is "three hundred seventy-eight million, seven hundred fifteen thousand, five hundred sixty-five".