2887022861 has 2 divisors, whose sum is σ = 2887022862. Its totient is φ = 2887022860.

The previous prime is 2887022843. The next prime is 2887022921. The reversal of 2887022861 is 1682207882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2887020361 + 2500 = 53731^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 2887022861 - 2⁶ = 2887022797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2887022821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1443511430 + 1443511431.

It is an arithmetic number, because the mean of its divisors is an integer number (1443511431).

Almost surely, 2^2887022861 is an apocalyptic number.

It is an amenable number.

2887022861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2887022861 is an equidigital number, since it uses as much as digits as its factorization.

2887022861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 2887022861 is about 53731.0232640325. The cubic root of 2887022861 is about 1423.9128445072.

The spelling of 2887022861 in words is "two billion, eight hundred eighty-seven million, twenty-two thousand, eight hundred sixty-one".