180894406 has 64 divisors (see below), whose sum is σ = 354585600. Its totient is φ = 67167360.

The previous prime is 180894403. The next prime is 180894407. The reversal of 180894406 is 604498081.

It is a super-2 number, since 2×180894406² = 65445572244185672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180894401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 301695 + ... + 302293.

It is an arithmetic number, because the mean of its divisors is an integer number (5540400).

Almost surely, 2^180894406 is an apocalyptic number.

180894406 is a deficient number, since it is larger than the sum of its proper divisors (173691194).

180894406 is a wasteful number, since it uses less digits than its factorization.

180894406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 180894406 is about 13449.6991044410. The cubic root of 180894406 is about 565.5552596005. Note that the first 3 decimals are identical.

The spelling of 180894406 in words is "one hundred eighty million, eight hundred ninety-four thousand, four hundred six".