18285345069 has 32 divisors (see below), whose sum is σ = 26262973440. Its totient is φ = 11288057088.

The previous prime is 18285345037. The next prime is 18285345079. The reversal of 18285345069 is 96054358281.

It is not a de Polignac number, because 18285345069 - 2⁵ = 18285345037 is a prime.

It is a super-2 number, since 2×18285345069² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18285345079) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 308002 + ... + 362540.

It is an arithmetic number, because the mean of its divisors is an integer number (820717920).

Almost surely, 2^18285345069 is an apocalyptic number.

It is an amenable number.

18285345069 is a deficient number, since it is larger than the sum of its proper divisors (7977628371).

18285345069 is a wasteful number, since it uses less digits than its factorization.

18285345069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54721.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 18285345069 in words is "eighteen billion, two hundred eighty-five million, three hundred forty-five thousand, sixty-nine".