18655034897 has 4 divisors (see below), whose sum is σ = 18655590720. Its totient is φ = 18654479076.

The previous prime is 18655034869. The next prime is 18655034899. The reversal of 18655034897 is 79843055681.

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 a de Polignac number, because none of the positive numbers 2^k-18655034897 is a prime.

It is a super-4 number, since 4×18655034897⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18655034899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224093 + ... + 295850.

It is an arithmetic number, because the mean of its divisors is an integer number (4663897680).

Almost surely, 2^18655034897 is an apocalyptic number.

It is an amenable number.

18655034897 is a deficient number, since it is larger than the sum of its proper divisors (555823).

18655034897 is an equidigital number, since it uses as much as digits as its factorization.

18655034897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555822.

The product of its (nonzero) digits is 7257600, while the sum is 56.

The spelling of 18655034897 in words is "eighteen billion, six hundred fifty-five million, thirty-four thousand, eight hundred ninety-seven".