2180169 has 8 divisors (see below), whose sum is σ = 3229920. Its totient is φ = 1453428.

The previous prime is 2180159. The next prime is 2180173. The reversal of 2180169 is 9610812.

It is not a de Polignac number, because 2180169 - 2¹³ = 2171977 is a prime.

It is a super-2 number, since 2×2180169² = 9506273737122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 80747 = 2180169 / (2 + 1 + 8 + 0 + 1 + 6 + 9).

It is not an unprimeable number, because it can be changed into a prime (2180119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40347 + ... + 40400.

It is an arithmetic number, because the mean of its divisors is an integer number (403740).

2^2180169 is an apocalyptic number.

It is an amenable number.

2180169 is a deficient number, since it is larger than the sum of its proper divisors (1049751).

2180169 is an equidigital number, since it uses as much as digits as its factorization.

2180169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80756 (or 80750 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 2180169 is about 1476.5395355357. The cubic root of 2180169 is about 129.6671762510.

The spelling of 2180169 in words is "two million, one hundred eighty thousand, one hundred sixty-nine".