191214987484 has 24 divisors (see below), whose sum is σ = 349802173728. Its totient is φ = 91286437440.

The previous prime is 191214987419. The next prime is 191214987487. The reversal of 191214987484 is 484789412191.

191214987484 is digitally balanced in base 3, 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 (191214987487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1814487 + ... + 1916974.

It is an arithmetic number, because the mean of its divisors is an integer number (14575090572).

Almost surely, 2^191214987484 is an apocalyptic number.

It is an amenable number.

191214987484 is a deficient number, since it is larger than the sum of its proper divisors (158587186244).

191214987484 is a wasteful number, since it uses less digits than its factorization.

191214987484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3732045 (or 3732043 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 58.

The spelling of 191214987484 in words is "one hundred ninety-one billion, two hundred fourteen million, nine hundred eighty-seven thousand, four hundred eighty-four".