191049146 has 4 divisors (see below), whose sum is σ = 286573722. Its totient is φ = 95524572.

The previous prime is 191049121. The next prime is 191049149. The reversal of 191049146 is 641940191.

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

It can be written as a sum of positive squares in only one way, i.e., 182115025 + 8934121 = 13495^2 + 2989^2 .

It is not an unprimeable number, because it can be changed into a prime (191049149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47762285 + ... + 47762288.

Almost surely, 2^191049146 is an apocalyptic number.

191049146 is a deficient number, since it is larger than the sum of its proper divisors (95524576).

191049146 is an equidigital number, since it uses as much as digits as its factorization.

191049146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95524575.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 191049146 is about 13822.0528866012. The cubic root of 191049146 is about 575.9459122469.

The spelling of 191049146 in words is "one hundred ninety-one million, forty-nine thousand, one hundred forty-six".