18260545536 has 468 divisors, whose sum is σ = 59357883520. Its totient is φ = 5388042240.

The previous prime is 18260545469. The next prime is 18260545543. The reversal of 18260545536 is 63554506281.

18260545536 is a `hidden beast` number, since 1 + 8 + 2 + 60 + 54 + 5 + 536 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 18260545491 and 18260545500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 589049841 + ... + 589049871.

Almost surely, 2^18260545536 is an apocalyptic number.

18260545536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18260545536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29678941760).

18260545536 is an abundant number, since it is smaller than the sum of its proper divisors (41097337984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18260545536 is a wasteful number, since it uses less digits than its factorization.

18260545536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 18260545536 in words is "eighteen billion, two hundred sixty million, five hundred forty-five thousand, five hundred thirty-six".