378310289 has 4 divisors (see below), whose sum is σ = 432354624. Its totient is φ = 324265956.

The previous prime is 378310271. The next prime is 378310291. The reversal of 378310289 is 982013873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 378310289 - 2²⁰ = 377261713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378310189) 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 3 ways as a sum of consecutive naturals, for example, 27022157 + ... + 27022170.

It is an arithmetic number, because the mean of its divisors is an integer number (108088656).

Almost surely, 2^378310289 is an apocalyptic number.

It is an amenable number.

378310289 is a deficient number, since it is larger than the sum of its proper divisors (54044335).

378310289 is an equidigital number, since it uses as much as digits as its factorization.

378310289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54044334.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 378310289 is about 19450.2002303318. The cubic root of 378310289 is about 723.2404665805.

The spelling of 378310289 in words is "three hundred seventy-eight million, three hundred ten thousand, two hundred eighty-nine".