180533994 has 16 divisors (see below), whose sum is σ = 362884800. Its totient is φ = 59875200.

The previous prime is 180533993. The next prime is 180534007. The reversal of 180533994 is 499335081.

It is not an unprimeable number, because it can be changed into a prime (180533993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74407 + ... + 76794.

It is an arithmetic number, because the mean of its divisors is an integer number (22680300).

Almost surely, 2^180533994 is an apocalyptic number.

180533994 is an abundant number, since it is smaller than the sum of its proper divisors (182350806).

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

180533994 is a wasteful number, since it uses less digits than its factorization.

180533994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151405.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 180533994 is about 13436.2939086640. The cubic root of 180533994 is about 565.1794078753.

The spelling of 180533994 in words is "one hundred eighty million, five hundred thirty-three thousand, nine hundred ninety-four".