191533968 has 60 divisors (see below), whose sum is σ = 567567468. Its totient is φ = 60088320.

The previous prime is 191533967. The next prime is 191533981. The reversal of 191533968 is 869335191.

It can be written as a sum of positive squares in 2 ways, for example, as 172975104 + 18558864 = 13152^2 + 4308^2 .

It is not an unprimeable number, because it can be changed into a prime (191533967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36673 + ... + 41568.

Almost surely, 2^191533968 is an apocalyptic number.

191533968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

191533968 is an abundant number, since it is smaller than the sum of its proper divisors (376033500).

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

191533968 is a wasteful number, since it uses less digits than its factorization.

191533968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78272 (or 78263 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 191533968 is about 13839.5797624061. The cubic root of 191533968 is about 576.4326899292.

The spelling of 191533968 in words is "one hundred ninety-one million, five hundred thirty-three thousand, nine hundred sixty-eight".