191140041 has 4 divisors (see below), whose sum is σ = 254853392. Its totient is φ = 127426692.

The previous prime is 191140021. The next prime is 191140069. The reversal of 191140041 is 140041191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 191140041 - 2⁵ = 191140009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (191140021) 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, 31856671 + ... + 31856676.

It is an arithmetic number, because the mean of its divisors is an integer number (63713348).

Almost surely, 2^191140041 is an apocalyptic number.

It is an amenable number.

191140041 is a deficient number, since it is larger than the sum of its proper divisors (63713351).

191140041 is an equidigital number, since it uses as much as digits as its factorization.

191140041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63713350.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 191140041 is about 13825.3405383014. The cubic root of 191140041 is about 576.0372365732.

The spelling of 191140041 in words is "one hundred ninety-one million, one hundred forty thousand, forty-one".