1171158 has 8 divisors (see below), whose sum is σ = 2342328. Its totient is φ = 390384.

The previous prime is 1171133. The next prime is 1171189. The reversal of 1171158 is 8511711.

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

1171158 is an admirable number.

It is a super-2 number, since 2×1171158² = 2743222121928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97591 + ... + 97602.

It is an arithmetic number, because the mean of its divisors is an integer number (292791).

2^1171158 is an apocalyptic number.

1171158 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.

1171158 is a wasteful number, since it uses less digits than its factorization.

1171158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195198.

The product of its digits is 280, while the sum is 24.

The square root of 1171158 is about 1082.2005359452. The cubic root of 1171158 is about 105.4075768659.

Adding to 1171158 its reverse (8511711), we get a palindrome (9682869).

It can be divided in two parts, 117 and 1158, that added together give a triangular number (1275 = T₅₀).

The spelling of 1171158 in words is "one million, one hundred seventy-one thousand, one hundred fifty-eight".