191933316 has 27 divisors (see below), whose sum is σ = 485374981. Its totient is φ = 63950064.

The previous prime is 191933309. The next prime is 191933317. The reversal of 191933316 is 613339191.

The square root of 191933316 is 13854.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 160123716 + 31809600 = 12654^2 + 5640^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191933317) 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 8 ways as a sum of consecutive naturals, for example, 81970 + ... + 84278.

Almost surely, 2^191933316 is an apocalyptic number.

191933316 is the 13854-th square number.

It is an amenable number.

191933316 is an abundant number, since it is smaller than the sum of its proper divisors (293441665).

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

191933316 is an equidigital number, since it uses as much as digits as its factorization.

191933316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4628 (or 2314 counting only the distinct ones).

The product of its digits is 13122, while the sum is 36.

The cubic root of 191933316 is about 576.8330322155.

Multiplying 191933316 by its sum of digits (36), we get a square (6909599376 = 83124²).

191933316 divided by its sum of digits (36) gives a square (5331481 = 2309²).

The spelling of 191933316 in words is "one hundred ninety-one million, nine hundred thirty-three thousand, three hundred sixteen".