180019982 has 8 divisors (see below), whose sum is σ = 270086952. Its totient is φ = 89991000.

The previous prime is 180019981. The next prime is 180019991. The reversal of 180019982 is 289910081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180019981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13232 + ... + 23132.

It is an arithmetic number, because the mean of its divisors is an integer number (33760869).

Almost surely, 2^180019982 is an apocalyptic number.

180019982 is a deficient number, since it is larger than the sum of its proper divisors (90066970).

180019982 is an equidigital number, since it uses as much as digits as its factorization.

180019982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18994.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 180019982 is about 13417.1525295049. The cubic root of 180019982 is about 564.6425096466.

The spelling of 180019982 in words is "one hundred eighty million, nineteen thousand, nine hundred eighty-two".