2165158 has 4 divisors (see below), whose sum is σ = 3247740. Its totient is φ = 1082578.

The previous prime is 2165147. The next prime is 2165159. The reversal of 2165158 is 8515612.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541288 + ... + 541291.

It is an arithmetic number, because the mean of its divisors is an integer number (811935).

2^2165158 is an apocalyptic number.

2165158 is a deficient number, since it is larger than the sum of its proper divisors (1082582).

2165158 is a wasteful number, since it uses less digits than its factorization.

2165158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082581.

The product of its digits is 2400, while the sum is 28.

The square root of 2165158 is about 1471.4475865623. The cubic root of 2165158 is about 129.3688938128.

The spelling of 2165158 in words is "two million, one hundred sixty-five thousand, one hundred fifty-eight".