1181148 has 12 divisors (see below), whose sum is σ = 2756040. Its totient is φ = 393712.

The previous prime is 1181137. The next prime is 1181149. The reversal of 1181148 is 8411811.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1181148² = 2790221195808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181149) 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, 49203 + ... + 49226.

It is an arithmetic number, because the mean of its divisors is an integer number (229670).

2^1181148 is an apocalyptic number.

It is an amenable number.

1181148 is an abundant number, since it is smaller than the sum of its proper divisors (1574892).

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

1181148 is a wasteful number, since it uses less digits than its factorization.

1181148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98436 (or 98434 counting only the distinct ones).

The product of its digits is 256, while the sum is 24.

The square root of 1181148 is about 1086.8063304932. The cubic root of 1181148 is about 105.7064382501.

Adding to 1181148 its reverse (8411811), we get a palindrome (9592959).

The spelling of 1181148 in words is "one million, one hundred eighty-one thousand, one hundred forty-eight".