2089520857 has 2 divisors, whose sum is σ = 2089520858. Its totient is φ = 2089520856.

The previous prime is 2089520803. The next prime is 2089520897. The reversal of 2089520857 is 7580259802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1147583376 + 941937481 = 33876^2 + 30691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2089520857 is a prime.

It is not a weakly prime, because it can be changed into another prime (2089520897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1044760428 + 1044760429.

It is an arithmetic number, because the mean of its divisors is an integer number (1044760429).

Almost surely, 2^2089520857 is an apocalyptic number.

It is an amenable number.

2089520857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2089520857 is an equidigital number, since it uses as much as digits as its factorization.

2089520857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 2089520857 is about 45711.2771315788. The cubic root of 2089520857 is about 1278.4455530076.

The spelling of 2089520857 in words is "two billion, eighty-nine million, five hundred twenty thousand, eight hundred fifty-seven".