2163442109 has 2 divisors, whose sum is σ = 2163442110. Its totient is φ = 2163442108.

The previous prime is 2163442103. The next prime is 2163442153. The reversal of 2163442109 is 9012443612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1606246084 + 557196025 = 40078^2 + 23605^2 .

It is a cyclic number.

It is not a de Polignac number, because 2163442109 - 2⁴ = 2163442093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2163442103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081721054 + 1081721055.

It is an arithmetic number, because the mean of its divisors is an integer number (1081721055).

Almost surely, 2^2163442109 is an apocalyptic number.

It is an amenable number.

2163442109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163442109 is an equidigital number, since it uses as much as digits as its factorization.

2163442109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2163442109 is about 46512.8166100485. The cubic root of 2163442109 is about 1293.3470976603.

The spelling of 2163442109 in words is "two billion, one hundred sixty-three million, four hundred forty-two thousand, one hundred nine".