191164379205 has 32 divisors (see below), whose sum is σ = 316449619200. Its totient is φ = 98426345472.

The previous prime is 191164379149. The next prime is 191164379233. The reversal of 191164379205 is 502973461191.

It is not a de Polignac number, because 191164379205 - 2¹⁵ = 191164346437 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4195536 + ... + 4240854.

It is an arithmetic number, because the mean of its divisors is an integer number (9889050600).

Almost surely, 2^191164379205 is an apocalyptic number.

191164379205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

191164379205 is a deficient number, since it is larger than the sum of its proper divisors (125285239995).

191164379205 is a wasteful number, since it uses less digits than its factorization.

191164379205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55053.

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 191164379205 in words is "one hundred ninety-one billion, one hundred sixty-four million, three hundred seventy-nine thousand, two hundred five".