2889270261 has 12 divisors (see below), whose sum is σ = 4317300780. Its totient is φ = 1859760000.

The previous prime is 2889270247. The next prime is 2889270269. The reversal of 2889270261 is 1620729882.

It can be written as a sum of positive squares in 2 ways, for example, as 2400020100 + 489250161 = 48990^2 + 22119^2 .

It is not a de Polignac number, because 2889270261 - 2⁵ = 2889270229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2889270269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5534740 + ... + 5535261.

It is an arithmetic number, because the mean of its divisors is an integer number (359775065).

Almost surely, 2^2889270261 is an apocalyptic number.

It is an amenable number.

2889270261 is a deficient number, since it is larger than the sum of its proper divisors (1428030519).

2889270261 is a wasteful number, since it uses less digits than its factorization.

2889270261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11070036 (or 11070033 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 2889270261 is about 53751.9326257205. The cubic root of 2889270261 is about 1424.2822298415.

The spelling of 2889270261 in words is "two billion, eight hundred eighty-nine million, two hundred seventy thousand, two hundred sixty-one".