18025710309 has 12 divisors (see below), whose sum is σ = 26083889676. Its totient is φ = 11995562112.

The previous prime is 18025710289. The next prime is 18025710349. The reversal of 18025710309 is 90301752081.

18025710309 is a `hidden beast` number, since 1 + 80 + 2 + 571 + 0 + 3 + 0 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10508300100 + 7517410209 = 102510^2 + 86703^2 .

It is not a de Polignac number, because 18025710309 - 2¹⁶ = 18025644773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18025710349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1792884 + ... + 1802909.

It is an arithmetic number, because the mean of its divisors is an integer number (2173657473).

Almost surely, 2^18025710309 is an apocalyptic number.

It is an amenable number.

18025710309 is a deficient number, since it is larger than the sum of its proper divisors (8058179367).

18025710309 is a wasteful number, since it uses less digits than its factorization.

18025710309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596356 (or 3596353 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 18025710309 in words is "eighteen billion, twenty-five million, seven hundred ten thousand, three hundred nine".