18322707653 has 4 divisors (see below), whose sum is σ = 18633262080. Its totient is φ = 18012153228.

The previous prime is 18322707617. The next prime is 18322707659. The reversal of 18322707653 is 35670722381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18322707653 - 2¹⁰ = 18322706629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18322707659) 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, 155277125 + ... + 155277242.

It is an arithmetic number, because the mean of its divisors is an integer number (4658315520).

Almost surely, 2^18322707653 is an apocalyptic number.

It is an amenable number.

18322707653 is a deficient number, since it is larger than the sum of its proper divisors (310554427).

18322707653 is an equidigital number, since it uses as much as digits as its factorization.

18322707653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310554426.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 18322707653 in words is "eighteen billion, three hundred twenty-two million, seven hundred seven thousand, six hundred fifty-three".