2159050849 has 2 divisors, whose sum is σ = 2159050850. Its totient is φ = 2159050848.

The previous prime is 2159050843. The next prime is 2159050867. The reversal of 2159050849 is 9480509512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1493049600 + 666001249 = 38640^2 + 25807^2 .

It is a cyclic number.

It is not a de Polignac number, because 2159050849 - 2²¹ = 2156953697 is a prime.

It is not a weakly prime, because it can be changed into another prime (2159050843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079525424 + 1079525425.

It is an arithmetic number, because the mean of its divisors is an integer number (1079525425).

Almost surely, 2^2159050849 is an apocalyptic number.

It is an amenable number.

2159050849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159050849 is an equidigital number, since it uses as much as digits as its factorization.

2159050849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 2159050849 is about 46465.5877935489. The cubic root of 2159050849 is about 1292.4714451825.

The spelling of 2159050849 in words is "two billion, one hundred fifty-nine million, fifty thousand, eight hundred forty-nine".