191141019 has 16 divisors (see below), whose sum is σ = 284874240. Its totient is φ = 126661320.

The previous prime is 191141011. The next prime is 191141021. The reversal of 191141019 is 910141191.

191141019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 191141019 - 2³ = 191141011 is a prime.

It is a super-2 number, since 2×191141019² = 73069778288716722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 191140983 and 191141001.

It is not an unprimeable number, because it can be changed into a prime (191141011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16687 + ... + 25704.

It is an arithmetic number, because the mean of its divisors is an integer number (17804640).

Almost surely, 2^191141019 is an apocalyptic number.

191141019 is a deficient number, since it is larger than the sum of its proper divisors (93733221).

191141019 is a wasteful number, since it uses less digits than its factorization.

191141019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42567 (or 42561 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

The square root of 191141019 is about 13825.3759080902. The cubic root of 191141019 is about 576.0382190352.

The spelling of 191141019 in words is "one hundred ninety-one million, one hundred forty-one thousand, nineteen".