191929109092 has 12 divisors (see below), whose sum is σ = 383858218240. Its totient is φ = 82255332456.

The previous prime is 191929109069. The next prime is 191929109107. The reversal of 191929109092 is 290901929191.

191929109092 is an admirable number.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3427305492 + ... + 3427305547.

Almost surely, 2^191929109092 is an apocalyptic number.

It is an amenable number.

191929109092 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191929109092 is a wasteful number, since it uses less digits than its factorization.

191929109092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6854611050 (or 6854611048 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 52.

The spelling of 191929109092 in words is "one hundred ninety-one billion, nine hundred twenty-nine million, one hundred nine thousand, ninety-two".