191012041 has 4 divisors (see below), whose sum is σ = 208376784. Its totient is φ = 173647300.

The previous prime is 191012027. The next prime is 191012057. The reversal of 191012041 is 140210191.

191012041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 140210191 = 11 ⋅12746381.

It is a cyclic number.

It is not a de Polignac number, because 191012041 - 2⁷ = 191011913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (191012141) 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, 8682355 + ... + 8682376.

It is an arithmetic number, because the mean of its divisors is an integer number (52094196).

Almost surely, 2^191012041 is an apocalyptic number.

191012041 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

191012041 is a deficient number, since it is larger than the sum of its proper divisors (17364743).

191012041 is a wasteful number, since it uses less digits than its factorization.

191012041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17364742.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 191012041 is about 13820.7105823109. The cubic root of 191012041 is about 575.9086236623.

The spelling of 191012041 in words is "one hundred ninety-one million, twelve thousand, forty-one".