2089878577 has 2 divisors, whose sum is σ = 2089878578. Its totient is φ = 2089878576.

The previous prime is 2089878569. The next prime is 2089878587. The reversal of 2089878577 is 7758789802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2029412401 + 60466176 = 45049^2 + 7776^2 .

It is a cyclic number.

It is not a de Polignac number, because 2089878577 - 2³ = 2089878569 is a prime.

It is not a weakly prime, because it can be changed into another prime (2089878517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1044939288 + 1044939289.

It is an arithmetic number, because the mean of its divisors is an integer number (1044939289).

Almost surely, 2^2089878577 is an apocalyptic number.

It is an amenable number.

2089878577 is a deficient number, since it is larger than the sum of its proper divisors (1).

2089878577 is an equidigital number, since it uses as much as digits as its factorization.

2089878577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15805440, while the sum is 61.

The square root of 2089878577 is about 45715.1897841407. The cubic root of 2089878577 is about 1278.5185042533.

The spelling of 2089878577 in words is "two billion, eighty-nine million, eight hundred seventy-eight thousand, five hundred seventy-seven".