378792665 has 4 divisors (see below), whose sum is σ = 454551204. Its totient is φ = 303034128.

The previous prime is 378792647. The next prime is 378792703. The reversal of 378792665 is 566297873.

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 225330121 + 153462544 = 15011^2 + 12388^2 .

It is a cyclic number.

It is not a de Polignac number, because 378792665 - 2²⁰ = 377744089 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 37879262 + ... + 37879271.

It is an arithmetic number, because the mean of its divisors is an integer number (113637801).

Almost surely, 2^378792665 is an apocalyptic number.

It is an amenable number.

378792665 is a deficient number, since it is larger than the sum of its proper divisors (75758539).

378792665 is an equidigital number, since it uses as much as digits as its factorization.

378792665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75758538.

The product of its digits is 3810240, while the sum is 53.

The square root of 378792665 is about 19462.5965636654. The cubic root of 378792665 is about 723.5477325803.

The spelling of 378792665 in words is "three hundred seventy-eight million, seven hundred ninety-two thousand, six hundred sixty-five".