191194149 has 8 divisors (see below), whose sum is σ = 255385440. Its totient is φ = 127232816.

The previous prime is 191194139. The next prime is 191194151. The reversal of 191194149 is 941491191.

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

It is a cyclic number.

It is not a de Polignac number, because 191194149 - 2⁵ = 191194117 is a prime.

It is a super-2 number, since 2×191194149² = 73110405223668402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191194139) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 55539 + ... + 58880.

It is an arithmetic number, because the mean of its divisors is an integer number (31923180).

Almost surely, 2^191194149 is an apocalyptic number.

It is an amenable number.

191194149 is a deficient number, since it is larger than the sum of its proper divisors (64191291).

191194149 is a wasteful number, since it uses less digits than its factorization.

191194149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114979.

The product of its digits is 11664, while the sum is 39.

The square root of 191194149 is about 13827.2972413267. The cubic root of 191194149 is about 576.0915863963.

It can be divided in two parts, 1911941 and 49, that added together give a triangular number (1911990 = T₁₉₅₅).

The spelling of 191194149 in words is "one hundred ninety-one million, one hundred ninety-four thousand, one hundred forty-nine".