180109057 has 4 divisors (see below), whose sum is σ = 180137556. Its totient is φ = 180080560.

The previous prime is 180109051. The next prime is 180109063. The reversal of 180109057 is 750901081.

180109057 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.

It is an interprime number because it is at equal distance from previous prime (180109051) and next prime (180109063).

It can be written as a sum of positive squares in 2 ways, for example, as 51036736 + 129072321 = 7144^2 + 11361^2 .

It is a cyclic number.

It is not a de Polignac number, because 180109057 - 2¹⁵ = 180076289 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58 + ... + 18979.

It is an arithmetic number, because the mean of its divisors is an integer number (45034389).

Almost surely, 2^180109057 is an apocalyptic number.

It is an amenable number.

180109057 is a deficient number, since it is larger than the sum of its proper divisors (28499).

180109057 is an equidigital number, since it uses as much as digits as its factorization.

180109057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28498.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 180109057 is about 13420.4715639951. The cubic root of 180109057 is about 564.7356238253.

The spelling of 180109057 in words is "one hundred eighty million, one hundred nine thousand, fifty-seven".