2789885155 has 4 divisors (see below), whose sum is σ = 3347862192. Its totient is φ = 2231908120.

The previous prime is 2789885149. The next prime is 2789885171. The reversal of 2789885155 is 5515889872.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2789885155 - 2¹³ = 2789876963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2789885155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278988511 + ... + 278988520.

It is an arithmetic number, because the mean of its divisors is an integer number (836965548).

Almost surely, 2^2789885155 is an apocalyptic number.

2789885155 is a deficient number, since it is larger than the sum of its proper divisors (557977037).

2789885155 is an equidigital number, since it uses as much as digits as its factorization.

2789885155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557977036.

The product of its digits is 8064000, while the sum is 58.

The square root of 2789885155 is about 52819.3634475085. The cubic root of 2789885155 is about 1407.7605001864.

The spelling of 2789885155 in words is "two billion, seven hundred eighty-nine million, eight hundred eighty-five thousand, one hundred fifty-five".