2101158 has 12 divisors (see below), whose sum is σ = 4552548. Its totient is φ = 700380.

The previous prime is 2101157. The next prime is 2101181. The reversal of 2101158 is 8511012.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 116731 = 2101158 / (2 + 1 + 0 + 1 + 1 + 5 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 2101158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58348 + ... + 58383.

It is an arithmetic number, because the mean of its divisors is an integer number (379379).

2^2101158 is an apocalyptic number.

2101158 is an abundant number, since it is smaller than the sum of its proper divisors (2451390).

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

2101158 is a wasteful number, since it uses less digits than its factorization.

2101158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116739 (or 116736 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 2101158 is about 1449.5371675124. The cubic root of 2101158 is about 128.0814504382.

The spelling of 2101158 in words is "two million, one hundred one thousand, one hundred fifty-eight".