180358020 has 36 divisors (see below), whose sum is σ = 547086540. Its totient is φ = 48095424.

The previous prime is 180358001. The next prime is 180358021. The reversal of 180358020 is 20853081.

It is a happy number.

180358020 is a `hidden beast` number, since 1 + 80 + 3 + 580 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 70862724 + 109495296 = 8418^2 + 10464^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (180358021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 500815 + ... + 501174.

Almost surely, 2^180358020 is an apocalyptic number.

180358020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180358020 is an abundant number, since it is smaller than the sum of its proper divisors (366728520).

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

180358020 is a wasteful number, since it uses less digits than its factorization.

180358020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002004 (or 1001999 counting only the distinct ones).

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

The square root of 180358020 is about 13429.7438545938. The cubic root of 180358020 is about 564.9957135446.

The spelling of 180358020 in words is "one hundred eighty million, three hundred fifty-eight thousand, twenty".