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BaseRepresentation
bin10010000110
31120220
4102012
514113
65210
73243
oct2206
91526
101158
11963
12806
136b1
145ca
15523
hex486

1158 has 8 divisors (see below), whose sum is σ = 2328. Its totient is φ = 384.

The previous prime is 1153. The next prime is 1163. The reversal of 1158 is 8511.

Adding to 1158 its reverse (8511), we get a palindrome (9669).

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1153) and next prime (1163).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 10.

It is a nialpdrome in base 6 and base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91 + ... + 102.

It is an arithmetic number, because the mean of its divisors is an integer number (291).

21158 is an apocalyptic number.

1158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1164).

1158 is a wasteful number, since it uses less digits than its factorization.

1158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198.

The product of its digits is 40, while the sum is 15.

The square root of 1158 is about 34.0293990543. The cubic root of 1158 is about 10.5011336644.

The spelling of 1158 in words is "one thousand, one hundred fifty-eight".

Divisors: 1 2 3 6 193 386 579 1158