2001158 has 4 divisors (see below), whose sum is σ = 3001740. Its totient is φ = 1000578.

The previous prime is 2001127. The next prime is 2001163. The reversal of 2001158 is 8511002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8511002 = 2 ⋅4255501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500288 + ... + 500291.

It is an arithmetic number, because the mean of its divisors is an integer number (750435).

2^2001158 is an apocalyptic number.

2001158 is a deficient number, since it is larger than the sum of its proper divisors (1000582).

2001158 is a wasteful number, since it uses less digits than its factorization.

2001158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000581.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 2001158 is about 1414.6229179538. The cubic root of 2001158 is about 126.0164167742.

The spelling of 2001158 in words is "two million, one thousand, one hundred fifty-eight".