18010732265 has 4 divisors (see below), whose sum is σ = 21612878724. Its totient is φ = 14408585808.

The previous prime is 18010732249. The next prime is 18010732283. The reversal of 18010732265 is 56223701081.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11997039961 + 6013692304 = 109531^2 + 77548^2 .

It is a cyclic number.

It is not a de Polignac number, because 18010732265 - 2⁴ = 18010732249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1801073222 + ... + 1801073231.

It is an arithmetic number, because the mean of its divisors is an integer number (5403219681).

Almost surely, 2^18010732265 is an apocalyptic number.

It is an amenable number.

18010732265 is a deficient number, since it is larger than the sum of its proper divisors (3602146459).

18010732265 is an equidigital number, since it uses as much as digits as its factorization.

18010732265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602146458.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 18010732265 in words is "eighteen billion, ten million, seven hundred thirty-two thousand, two hundred sixty-five".