2159861783 has 2 divisors, whose sum is σ = 2159861784. Its totient is φ = 2159861782.

The previous prime is 2159861761. The next prime is 2159861813. The reversal of 2159861783 is 3871689512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2159861783 - 2⁶ = 2159861719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2159860783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079930891 + 1079930892.

It is an arithmetic number, because the mean of its divisors is an integer number (1079930892).

Almost surely, 2^2159861783 is an apocalyptic number.

2159861783 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159861783 is an equidigital number, since it uses as much as digits as its factorization.

2159861783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 50.

The square root of 2159861783 is about 46474.3131525362. The cubic root of 2159861783 is about 1292.6332412551.

The spelling of 2159861783 in words is "two billion, one hundred fifty-nine million, eight hundred sixty-one thousand, seven hundred eighty-three".