191011068 has 48 divisors (see below), whose sum is σ = 496508320. Its totient is φ = 63504000.

The previous prime is 191011063. The next prime is 191011097. The reversal of 191011068 is 860110191.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191011063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43368 + ... + 47568.

Almost surely, 2^191011068 is an apocalyptic number.

191011068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

191011068 is an abundant number, since it is smaller than the sum of its proper divisors (305497252).

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

191011068 is a wasteful number, since it uses less digits than its factorization.

191011068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4635 (or 4627 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 27.

The square root of 191011068 is about 13820.6753814711. The cubic root of 191011068 is about 575.9076457833.

The spelling of 191011068 in words is "one hundred ninety-one million, eleven thousand, sixty-eight".