2164158 has 48 divisors (see below), whose sum is σ = 5010096. Its totient is φ = 699840.

The previous prime is 2164121. The next prime is 2164171. The reversal of 2164158 is 8514612.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29610 + ... + 29682.

It is an arithmetic number, because the mean of its divisors is an integer number (104377).

2^2164158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2164158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2505048).

2164158 is an abundant number, since it is smaller than the sum of its proper divisors (2845938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2164158 is an equidigital number, since it uses as much as digits as its factorization.

2164158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 139 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 2164158 is about 1471.1077458840. The cubic root of 2164158 is about 129.3489739708.

The spelling of 2164158 in words is "two million, one hundred sixty-four thousand, one hundred fifty-eight".