378833365 has 4 divisors (see below), whose sum is σ = 454600044. Its totient is φ = 303066688.

The previous prime is 378833341. The next prime is 378833369. The reversal of 378833365 is 563338873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 563338873 = 457 ⋅1232689.

It can be written as a sum of positive squares in 2 ways, for example, as 271524484 + 107308881 = 16478^2 + 10359^2 .

It is a cyclic number.

It is not a de Polignac number, because 378833365 - 2⁵ = 378833333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378833369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37883332 + ... + 37883341.

It is an arithmetic number, because the mean of its divisors is an integer number (113650011).

Almost surely, 2^378833365 is an apocalyptic number.

It is an amenable number.

378833365 is a deficient number, since it is larger than the sum of its proper divisors (75766679).

378833365 is an equidigital number, since it uses as much as digits as its factorization.

378833365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75766678.

The product of its digits is 1088640, while the sum is 46.

The square root of 378833365 is about 19463.6421309065. The cubic root of 378833365 is about 723.5736459103.

The spelling of 378833365 in words is "three hundred seventy-eight million, eight hundred thirty-three thousand, three hundred sixty-five".