180613985 has 16 divisors (see below), whose sum is σ = 220938240. Its totient is φ = 141704640.

The previous prime is 180613931. The next prime is 180614003. The reversal of 180613985 is 589316081.

It is not a de Polignac number, because 180613985 - 2¹⁰ = 180612961 is a prime.

It is a super-3 number, since 3×180613985³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140576 + ... + 141854.

It is an arithmetic number, because the mean of its divisors is an integer number (13808640).

Almost surely, 2^180613985 is an apocalyptic number.

It is an amenable number.

180613985 is a deficient number, since it is larger than the sum of its proper divisors (40324255).

180613985 is a wasteful number, since it uses less digits than its factorization.

180613985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 180613985 is about 13439.2702554863. The cubic root of 180613985 is about 565.2628687784.

The spelling of 180613985 in words is "one hundred eighty million, six hundred thirteen thousand, nine hundred eighty-five".