191992105214 has 16 divisors (see below), whose sum is σ = 354446963808. Its totient is φ = 75952920672.

The previous prime is 191992105183. The next prime is 191992105237. The reversal of 191992105214 is 412501299191.

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, 527450657 + ... + 527451020.

It is an arithmetic number, because the mean of its divisors is an integer number (22152935238).

Almost surely, 2^191992105214 is an apocalyptic number.

191992105214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

191992105214 is a deficient number, since it is larger than the sum of its proper divisors (162454858594).

191992105214 is a wasteful number, since it uses less digits than its factorization.

191992105214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054901699.

The product of its (nonzero) digits is 58320, while the sum is 44.

The spelling of 191992105214 in words is "one hundred ninety-one billion, nine hundred ninety-two million, one hundred five thousand, two hundred fourteen".