2165559158 has 16 divisors (see below), whose sum is σ = 3873795840. Its totient is φ = 887744616.

The previous prime is 2165559107. The next prime is 2165559203. The reversal of 2165559158 is 8519555612.

2165559158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3362348 + ... + 3362991.

It is an arithmetic number, because the mean of its divisors is an integer number (242112240).

Almost surely, 2^2165559158 is an apocalyptic number.

2165559158 is a deficient number, since it is larger than the sum of its proper divisors (1708236682).

2165559158 is a wasteful number, since it uses less digits than its factorization.

2165559158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6725371.

The product of its digits is 540000, while the sum is 47.

The square root of 2165559158 is about 46535.5687404807. The cubic root of 2165559158 is about 1293.7688309301.

The spelling of 2165559158 in words is "two billion, one hundred sixty-five million, five hundred fifty-nine thousand, one hundred fifty-eight".