191941013 has 4 divisors (see below), whose sum is σ = 209390208. Its totient is φ = 174491820.

The previous prime is 191940979. The next prime is 191941019. The reversal of 191941013 is 310149191.

191941013 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: 310149191 = 11 ⋅28195381.

It is a cyclic number.

It is not a de Polignac number, because 191941013 - 2¹⁰ = 191939989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191941019) 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, 8724581 + ... + 8724602.

It is an arithmetic number, because the mean of its divisors is an integer number (52347552).

Almost surely, 2^191941013 is an apocalyptic number.

It is an amenable number.

191941013 is a deficient number, since it is larger than the sum of its proper divisors (17449195).

191941013 is a wasteful number, since it uses less digits than its factorization.

191941013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17449194.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 191941013 is about 13854.2777870230. The cubic root of 191941013 is about 576.8407429222.

The spelling of 191941013 in words is "one hundred ninety-one million, nine hundred forty-one thousand, thirteen".