191872230154 has 16 divisors (see below), whose sum is σ = 315139934880. Its totient is φ = 86890429360.

The previous prime is 191872230127. The next prime is 191872230161. The reversal of 191872230154 is 451032278191.

191872230154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 191872230154.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16204984 + ... + 16216819.

It is an arithmetic number, because the mean of its divisors is an integer number (19696245930).

Almost surely, 2^191872230154 is an apocalyptic number.

191872230154 is a deficient number, since it is larger than the sum of its proper divisors (123267704726).

191872230154 is a wasteful number, since it uses less digits than its factorization.

191872230154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32422085.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 191872230154 in words is "one hundred ninety-one billion, eight hundred seventy-two million, two hundred thirty thousand, one hundred fifty-four".