191901920596 has 24 divisors (see below), whose sum is σ = 353693752160. Its totient is φ = 90851997600.

The previous prime is 191901920591. The next prime is 191901920621. The reversal of 191901920596 is 695029109191.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191901920591) 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, 536970 + ... + 819841.

Almost surely, 2^191901920596 is an apocalyptic number.

It is an amenable number.

191901920596 is a deficient number, since it is larger than the sum of its proper divisors (161791831564).

191901920596 is a wasteful number, since it uses less digits than its factorization.

191901920596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358695 (or 1358693 counting only the distinct ones).

The product of its (nonzero) digits is 393660, while the sum is 52.

The spelling of 191901920596 in words is "one hundred ninety-one billion, nine hundred one million, nine hundred twenty thousand, five hundred ninety-six".