191144412 has 36 divisors (see below), whose sum is σ = 483592200. Its totient is φ = 63659232.

The previous prime is 191144411. The next prime is 191144453. The reversal of 191144412 is 214441191.

191144412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191144411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73714 + ... + 76262.

Almost surely, 2^191144412 is an apocalyptic number.

191144412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191144412 is an abundant number, since it is smaller than the sum of its proper divisors (292447788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191144412 is a wasteful number, since it uses less digits than its factorization.

191144412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4642 (or 4637 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 191144412 is about 13825.4986166865. The cubic root of 191144412 is about 576.0416274892.

The spelling of 191144412 in words is "one hundred ninety-one million, one hundred forty-four thousand, four hundred twelve".