2878444388389 has 8 divisors (see below), whose sum is σ = 2919402233280. Its totient is φ = 2837498109600.

The previous prime is 2878444388341. The next prime is 2878444388411. The reversal of 2878444388389 is 9838834448782.

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

It is a cyclic number.

It is not a de Polignac number, because 2878444388389 - 2⁹ = 2878444387877 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 (2878444388789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2389632 + ... + 3386329.

It is an arithmetic number, because the mean of its divisors is an integer number (364925279160).

Almost surely, 2^{2878444388389} is an apocalyptic number.

It is an amenable number.

2878444388389 is a deficient number, since it is larger than the sum of its proper divisors (40957844891).

2878444388389 is an equidigital number, since it uses as much as digits as its factorization.

2878444388389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5783051.

The product of its digits is 2378170368, while the sum is 76.

The spelling of 2878444388389 in words is "two trillion, eight hundred seventy-eight billion, four hundred forty-four million, three hundred eighty-eight thousand, three hundred eighty-nine".