1148191 has 4 divisors (see below), whose sum is σ = 1252584. Its totient is φ = 1043800.

The previous prime is 1148177. The next prime is 1148219. The reversal of 1148191 is 1918411.

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

It is a cyclic number.

It is not a de Polignac number, because 1148191 - 2¹¹ = 1146143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148111) 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, 52180 + ... + 52201.

It is an arithmetic number, because the mean of its divisors is an integer number (313146).

2^1148191 is an apocalyptic number.

1148191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1148191 is a deficient number, since it is larger than the sum of its proper divisors (104393).

1148191 is a wasteful number, since it uses less digits than its factorization.

1148191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104392.

The product of its digits is 288, while the sum is 25.

The square root of 1148191 is about 1071.5367469200. The cubic root of 1148191 is about 104.7139911128.

The spelling of 1148191 in words is "one million, one hundred forty-eight thousand, one hundred ninety-one".