264072191 has 4 divisors (see below), whose sum is σ = 264115152. Its totient is φ = 264029232.

The previous prime is 264072161. The next prime is 264072199. The reversal of 264072191 is 191270462.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 264072191 - 2¹⁴ = 264055807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264072199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10331 + ... + 25196.

It is an arithmetic number, because the mean of its divisors is an integer number (66028788).

Almost surely, 2^264072191 is an apocalyptic number.

264072191 is a deficient number, since it is larger than the sum of its proper divisors (42961).

264072191 is an equidigital number, since it uses as much as digits as its factorization.

264072191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42960.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 264072191 is about 16250.2981818796. The cubic root of 264072191 is about 641.5653341829.

The spelling of 264072191 in words is "two hundred sixty-four million, seventy-two thousand, one hundred ninety-one".