180218928484 has 27 divisors (see below), whose sum is σ = 366886346547. Its totient is φ = 77234136504.

The previous prime is 180218928481. The next prime is 180218928523. The reversal of 180218928484 is 484829812081.

It is a happy number.

The square root of 180218928484 is 424522.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×180218928484² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (180218928481) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5928147 + ... + 5958469.

Almost surely, 2^180218928484 is an apocalyptic number.

180218928484 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

180218928484 is the 424522-nd square number.

It is an amenable number.

180218928484 is an abundant number, since it is smaller than the sum of its proper divisors (186667418063).

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

180218928484 is an frugal number, since it uses more digits than its factorization.

180218928484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60664 (or 30332 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 55.

The spelling of 180218928484 in words is "one hundred eighty billion, two hundred eighteen million, nine hundred twenty-eight thousand, four hundred eighty-four".