191340049 has 8 divisors (see below), whose sum is σ = 202716648. Its totient is φ = 179976960.

The previous prime is 191340047. The next prime is 191340119. The reversal of 191340049 is 940043191.

It can be written as a sum of positive squares in 4 ways, for example, as 132710400 + 58629649 = 11520^2 + 7657^2 .

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

It is not a de Polignac number, because 191340049 - 2¹ = 191340047 is a prime.

It is a super-2 number, since 2×191340049² = 73222028702644802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 191340049.

It is not an unprimeable number, because it can be changed into a prime (191340043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50199 + ... + 53875.

It is an arithmetic number, because the mean of its divisors is an integer number (25339581).

Almost surely, 2^191340049 is an apocalyptic number.

It is an amenable number.

191340049 is a deficient number, since it is larger than the sum of its proper divisors (11376599).

191340049 is a wasteful number, since it uses less digits than its factorization.

191340049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6755.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 191340049 is about 13832.5720312601. The cubic root of 191340049 is about 576.2380873780.

The spelling of 191340049 in words is "one hundred ninety-one million, three hundred forty thousand, forty-nine".