180612109 has 4 divisors (see below), whose sum is σ = 180709020. Its totient is φ = 180515200.

The previous prime is 180612017. The next prime is 180612121. The reversal of 180612109 is 901216081.

It is a happy number.

180612109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901216081 = 53 ⋅17004077.

It can be written as a sum of positive squares in 2 ways, for example, as 33062500 + 147549609 = 5750^2 + 12147^2 .

It is a cyclic number.

It is not a de Polignac number, because 180612109 - 2²³ = 172223501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180612149) 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, 45604 + ... + 49405.

It is an arithmetic number, because the mean of its divisors is an integer number (45177255).

Almost surely, 2^180612109 is an apocalyptic number.

It is an amenable number.

180612109 is a deficient number, since it is larger than the sum of its proper divisors (96911).

180612109 is an equidigital number, since it uses as much as digits as its factorization.

180612109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96910.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 180612109 is about 13439.2004598488. The cubic root of 180612109 is about 565.2609116822.

The spelling of 180612109 in words is "one hundred eighty million, six hundred twelve thousand, one hundred nine".