1148149 has 4 divisors (see below), whose sum is σ = 1150636. Its totient is φ = 1145664.

The previous prime is 1148111. The next prime is 1148167. The reversal of 1148149 is 9418411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9418411 = 2309 ⋅4079.

It can be written as a sum of positive squares in 2 ways, for example, as 13924 + 1134225 = 118^2 + 1065^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148149 - 2⁹ = 1147637 is a prime.

It is a super-2 number, since 2×1148149² = 2636492252402, which contains 22 as substring.

It is a Duffinian number.

1148149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148249) 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, 324 + ... + 1549.

It is an arithmetic number, because the mean of its divisors is an integer number (287659).

2^1148149 is an apocalyptic number.

It is an amenable number.

1148149 is a deficient number, since it is larger than the sum of its proper divisors (2487).

1148149 is an equidigital number, since it uses as much as digits as its factorization.

1148149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486.

The product of its digits is 1152, while the sum is 28.

The square root of 1148149 is about 1071.5171487195. The cubic root of 1148149 is about 104.7127143097.

The spelling of 1148149 in words is "one million, one hundred forty-eight thousand, one hundred forty-nine".