264418081 has 4 divisors (see below), whose sum is σ = 264470164. Its totient is φ = 264366000.

The previous prime is 264418073. The next prime is 264418087. The reversal of 264418081 is 180814462.

264418081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180814462 = 2 ⋅90407231.

It can be written as a sum of positive squares in 2 ways, for example, as 201072400 + 63345681 = 14180^2 + 7959^2 .

It is a cyclic number.

It is not a de Polignac number, because 264418081 - 2³ = 264418073 is a prime.

It is a super-2 number, since 2×264418081² = 139833843119445122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264418087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17490 + ... + 28891.

It is an arithmetic number, because the mean of its divisors is an integer number (66117541).

Almost surely, 2^264418081 is an apocalyptic number.

It is an amenable number.

264418081 is a deficient number, since it is larger than the sum of its proper divisors (52083).

264418081 is an equidigital number, since it uses as much as digits as its factorization.

264418081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52082.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 264418081 is about 16260.9372731094. The cubic root of 264418081 is about 641.8453260725.

The spelling of 264418081 in words is "two hundred sixty-four million, four hundred eighteen thousand, eighty-one".