191768439492 has 96 divisors (see below), whose sum is σ = 582061482240. Its totient is φ = 53454608640.

The previous prime is 191768439491. The next prime is 191768439557. The reversal of 191768439492 is 294934867191.

191768439492 is a `hidden beast` number, since 1 + 91 + 76 + 8 + 4 + 394 + 92 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (191768439491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3062443 + ... + 3124434.

It is an arithmetic number, because the mean of its divisors is an integer number (6063140440).

Almost surely, 2^191768439492 is an apocalyptic number.

191768439492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191768439492 is an abundant number, since it is smaller than the sum of its proper divisors (390293042748).

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

191768439492 is a wasteful number, since it uses less digits than its factorization.

191768439492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186938 (or 6186930 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The spelling of 191768439492 in words is "one hundred ninety-one billion, seven hundred sixty-eight million, four hundred thirty-nine thousand, four hundred ninety-two".