191442272118 has 16 divisors (see below), whose sum is σ = 382889876160. Its totient is φ = 63813202056.

The previous prime is 191442272017. The next prime is 191442272123. The reversal of 191442272118 is 811272244191.

It is a self number, because there is not a number n which added to its sum of digits gives 191442272118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363273 + ... + 717531.

It is an arithmetic number, because the mean of its divisors is an integer number (23930617260).

Almost surely, 2^191442272118 is an apocalyptic number.

191442272118 is an abundant number, since it is smaller than the sum of its proper divisors (191447604042).

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

191442272118 is a wasteful number, since it uses less digits than its factorization.

191442272118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444331.

The product of its digits is 64512, while the sum is 42.

The spelling of 191442272118 in words is "one hundred ninety-one billion, four hundred forty-two million, two hundred seventy-two thousand, one hundred eighteen".