18268327653 has 8 divisors (see below), whose sum is σ = 25790580288. Its totient is φ = 11462480064.

The previous prime is 18268327633. The next prime is 18268327663. The reversal of 18268327653 is 35672386281.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18268327653 - 2²¹ = 18266230501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 358202503 = 18268327653 / (1 + 8 + 2 + 6 + 8 + 3 + 2 + 7 + 6 + 5 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 18268327596 and 18268327605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18268327603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179101201 + ... + 179101302.

It is an arithmetic number, because the mean of its divisors is an integer number (3223822536).

Almost surely, 2^18268327653 is an apocalyptic number.

It is an amenable number.

18268327653 is a deficient number, since it is larger than the sum of its proper divisors (7522252635).

18268327653 is a wasteful number, since it uses less digits than its factorization.

18268327653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358202523.

The product of its digits is 2903040, while the sum is 51.

The spelling of 18268327653 in words is "eighteen billion, two hundred sixty-eight million, three hundred twenty-seven thousand, six hundred fifty-three".