180109011 has 4 divisors (see below), whose sum is σ = 240145352. Its totient is φ = 120072672.

The previous prime is 180108979. The next prime is 180109051. The reversal of 180109011 is 110901081.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 180109011 - 2⁵ = 180108979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180109051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30018166 + ... + 30018171.

It is an arithmetic number, because the mean of its divisors is an integer number (60036338).

Almost surely, 2^180109011 is an apocalyptic number.

180109011 is a deficient number, since it is larger than the sum of its proper divisors (60036341).

180109011 is an equidigital number, since it uses as much as digits as its factorization.

180109011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60036340.

The product of its (nonzero) digits is 72, while the sum is 21.

The square root of 180109011 is about 13420.4698501953. The cubic root of 180109011 is about 564.7355757473.

It can be divided in two parts, 180 and 109011, that multiplied together give a triangular number (19621980 = T₆₂₆₄).

The spelling of 180109011 in words is "one hundred eighty million, one hundred nine thousand, eleven".