1001158 has 4 divisors (see below), whose sum is σ = 1501740. Its totient is φ = 500578.

The previous prime is 1001153. The next prime is 1001159. The reversal of 1001158 is 8511001.

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

It is a super-3 number, since 3×1001158³ = 3010434073334508936, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250288 + ... + 250291.

It is an arithmetic number, because the mean of its divisors is an integer number (375435).

2^1001158 is an apocalyptic number.

1001158 is a deficient number, since it is larger than the sum of its proper divisors (500582).

1001158 is an equidigital number, since it uses as much as digits as its factorization.

1001158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500581.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1001158 is about 1000.5788324765. The cubic root of 1001158 is about 100.0385851100.

Adding to 1001158 its reverse (8511001), we get a palindrome (9512159).

The spelling of 1001158 in words is "one million, one thousand, one hundred fifty-eight".