18085527180 has 384 divisors, whose sum is σ = 68349173760. Its totient is φ = 3875696640.

The previous prime is 18085527137. The next prime is 18085527211. The reversal of 18085527180 is 8172558081.

18085527180 is a `hidden beast` number, since 1 + 80 + 8 + 552 + 7 + 18 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 27695734 + ... + 27696386.

It is an arithmetic number, because the mean of its divisors is an integer number (177992640).

Almost surely, 2^18085527180 is an apocalyptic number.

18085527180 is a gapful number since it is divisible by the number (10) 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 18085527180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34174586880).

18085527180 is an abundant number, since it is smaller than the sum of its proper divisors (50263646580).

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

18085527180 is a wasteful number, since it uses less digits than its factorization.

18085527180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1118 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 45.

The spelling of 18085527180 in words is "eighteen billion, eighty-five million, five hundred twenty-seven thousand, one hundred eighty".