180538002 has 18 divisors (see below), whose sum is σ = 391289223. Its totient is φ = 60160332.

The previous prime is 180537991. The next prime is 180538003. The reversal of 180538002 is 200835081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 90269001 + 90269001 = 9501^2 + 9501^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=9501.

It is not an unprimeable number, because it can be changed into a prime (180538003) 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, 55423 + ... + 58589.

Almost surely, 2^180538002 is an apocalyptic number.

180538002 is an abundant number, since it is smaller than the sum of its proper divisors (210751221).

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

180538002 is an frugal number, since it uses more digits than its factorization.

180538002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6342 (or 3172 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 180538002 is about 13436.4430561068. The cubic root of 180538002 is about 565.1835903236.

The spelling of 180538002 in words is "one hundred eighty million, five hundred thirty-eight thousand, two".