180135085 has 8 divisors (see below), whose sum is σ = 232790040. Its totient is φ = 133022784.

The previous prime is 180135073. The next prime is 180135091. The reversal of 180135085 is 580531081.

It can be written as a sum of positive squares in 4 ways, for example, as 9597604 + 170537481 = 3098^2 + 13059^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 180135085 - 2²⁵ = 146580653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1385590 + ... + 1385719.

It is an arithmetic number, because the mean of its divisors is an integer number (29098755).

Almost surely, 2^180135085 is an apocalyptic number.

It is an amenable number.

180135085 is a deficient number, since it is larger than the sum of its proper divisors (52654955).

180135085 is a wasteful number, since it uses less digits than its factorization.

180135085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771327.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 180135085 is about 13421.4412415359. The cubic root of 180135085 is about 564.7628262900.

The spelling of 180135085 in words is "one hundred eighty million, one hundred thirty-five thousand, eighty-five".