191427798790 has 8 divisors (see below), whose sum is σ = 344570037840. Its totient is φ = 76571119512.

The previous prime is 191427798781. The next prime is 191427798827. The reversal of 191427798790 is 97897724191.

191427798790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 9571389930 + ... + 9571389949.

It is an arithmetic number, because the mean of its divisors is an integer number (43071254730).

Almost surely, 2^191427798790 is an apocalyptic number.

191427798790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

191427798790 is a deficient number, since it is larger than the sum of its proper divisors (153142239050).

191427798790 is a wasteful number, since it uses less digits than its factorization.

191427798790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19142779886.

The product of its (nonzero) digits is 16003008, while the sum is 64.

The spelling of 191427798790 in words is "one hundred ninety-one billion, four hundred twenty-seven million, seven hundred ninety-eight thousand, seven hundred ninety".