191928191001 has 8 divisors (see below), whose sum is σ = 255940700064. Its totient is φ = 127933904640.

The previous prime is 191928190999. The next prime is 191928191087. The reversal of 191928191001 is 100191829191.

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

It is not a de Polignac number, because 191928191001 - 2¹ = 191928190999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (191928191501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4531080 + ... + 4573241.

It is an arithmetic number, because the mean of its divisors is an integer number (31992587508).

Almost surely, 2^191928191001 is an apocalyptic number.

It is an amenable number.

191928191001 is a deficient number, since it is larger than the sum of its proper divisors (64012509063).

191928191001 is an equidigital number, since it uses as much as digits as its factorization.

191928191001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9111351.

The product of its (nonzero) digits is 11664, while the sum is 42.

The spelling of 191928191001 in words is "one hundred ninety-one billion, nine hundred twenty-eight million, one hundred ninety-one thousand, one".