191484697128 has 16 divisors (see below), whose sum is σ = 478711742880. Its totient is φ = 63828232368.

The previous prime is 191484697097. The next prime is 191484697133. The reversal of 191484697128 is 821796484191.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3989264500 + ... + 3989264547.

It is an arithmetic number, because the mean of its divisors is an integer number (29919483930).

Almost surely, 2^191484697128 is an apocalyptic number.

It is an amenable number.

191484697128 is an abundant number, since it is smaller than the sum of its proper divisors (287227045752).

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

191484697128 is a wasteful number, since it uses less digits than its factorization.

191484697128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7978529056 (or 7978529052 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 60.

The spelling of 191484697128 in words is "one hundred ninety-one billion, four hundred eighty-four million, six hundred ninety-seven thousand, one hundred twenty-eight".