191149 has 12 divisors (see below), whose sum is σ = 229824. Its totient is φ = 158424.

The previous prime is 191143. The next prime is 191161. The reversal of 191149 is 941191.

191149 = T₂₂ + T₂₃ + ... + T₁₀₄.

It is not a de Polignac number, because 191149 - 2³ = 191141 is a prime.

191149 is a Rhonda number in base 4.

191149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2262 + ... + 2344.

It is an arithmetic number, because the mean of its divisors is an integer number (19152).

2¹⁹¹¹⁴⁹ is an apocalyptic number.

It is an amenable number.

191149 is a deficient number, since it is larger than the sum of its proper divisors (38675).

191149 is an equidigital number, since it uses as much as digits as its factorization.

191149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 137 counting only the distinct ones).

The product of its digits is 324, while the sum is 25.

The square root of 191149 is about 437.2059011496. The cubic root of 191149 is about 57.6046236322.

It can be divided in two parts, 1911 and 49, that multiplied together give a palindrome (93639).

The spelling of 191149 in words is "one hundred ninety-one thousand, one hundred forty-nine".