18260660536 has 8 divisors (see below), whose sum is σ = 34238738520. Its totient is φ = 9130330264.

The previous prime is 18260660533. The next prime is 18260660567. The reversal of 18260660536 is 63506606281.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×18260660536² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18260660492 and 18260660501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18260660533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1141291276 + ... + 1141291291.

It is an arithmetic number, because the mean of its divisors is an integer number (4279842315).

Almost surely, 2^18260660536 is an apocalyptic number.

It is an amenable number.

18260660536 is a deficient number, since it is larger than the sum of its proper divisors (15978077984).

18260660536 is a wasteful number, since it uses less digits than its factorization.

18260660536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282582573 (or 2282582569 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 18260660536 in words is "eighteen billion, two hundred sixty million, six hundred sixty thousand, five hundred thirty-six".