2389481378 has 8 divisors (see below), whose sum is σ = 3612444672. Its totient is φ = 1185333156.

The previous prime is 2389481377. The next prime is 2389481399. The reversal of 2389481378 is 8731849832.

2389481378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (2389481377) 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, 4703450 + ... + 4703957.

It is an arithmetic number, because the mean of its divisors is an integer number (451555584).

Almost surely, 2^2389481378 is an apocalyptic number.

2389481378 is a deficient number, since it is larger than the sum of its proper divisors (1222963294).

2389481378 is a wasteful number, since it uses less digits than its factorization.

2389481378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9407536.

The product of its digits is 2322432, while the sum is 53.

The square root of 2389481378 is about 48882.3217329128. The cubic root of 2389481378 is about 1336.9070600640.

The spelling of 2389481378 in words is "two billion, three hundred eighty-nine million, four hundred eighty-one thousand, three hundred seventy-eight".