191489472 has 42 divisors (see below), whose sum is σ = 548871648. Its totient is φ = 63829632.

The previous prime is 191489471. The next prime is 191489483. The reversal of 191489472 is 274984191.

It is a happy number.

191489472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191489471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 165648 + ... + 166799.

Almost surely, 2^191489472 is an apocalyptic number.

191489472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191489472 is an abundant number, since it is smaller than the sum of its proper divisors (357382176).

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

191489472 is a wasteful number, since it uses less digits than its factorization.

191489472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332465 (or 332452 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 191489472 is about 13837.9721057675. The cubic root of 191489472 is about 576.3880486998.

The spelling of 191489472 in words is "one hundred ninety-one million, four hundred eighty-nine thousand, four hundred seventy-two".