191884968 has 48 divisors (see below), whose sum is σ = 566935200. Its totient is φ = 58146720.

The previous prime is 191884939. The next prime is 191884981. The reversal of 191884968 is 869488191.

It is a super-2 number, since 2×191884968² = 73639681888722048, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120348 + ... + 121931.

It is an arithmetic number, because the mean of its divisors is an integer number (11811150).

Almost surely, 2^191884968 is an apocalyptic number.

191884968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

191884968 is an abundant number, since it is smaller than the sum of its proper divisors (375050232).

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

191884968 is a wasteful number, since it uses less digits than its factorization.

191884968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242302 (or 242295 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 191884968 is about 13852.2549788834. The cubic root of 191884968 is about 576.7845934034.

The spelling of 191884968 in words is "one hundred ninety-one million, eight hundred eighty-four thousand, nine hundred sixty-eight".