2878900001389 has 8 divisors (see below), whose sum is σ = 3047432240160. Its totient is φ = 2714985084336.

The previous prime is 2878900001387. The next prime is 2878900001413. The reversal of 2878900001389 is 9831000098782.

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 2878900001389 - 2¹ = 2878900001387 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 (2878900001387) 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, 1154329147 + ... + 1154331640.

It is an arithmetic number, because the mean of its divisors is an integer number (380929030020).

Almost surely, 2^{2878900001389} is an apocalyptic number.

2878900001389 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2878900001389 is a deficient number, since it is larger than the sum of its proper divisors (168532238771).

2878900001389 is a wasteful number, since it uses less digits than its factorization.

2878900001389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308660859.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 2878900001389 in words is "two trillion, eight hundred seventy-eight billion, nine hundred million, one thousand, three hundred eighty-nine".