1880305 has 16 divisors (see below), whose sum is σ = 2663424. Its totient is φ = 1247040.

The previous prime is 1880287. The next prime is 1880309. The reversal of 1880305 is 5030881.

It is not a de Polignac number, because 1880305 - 2¹¹ = 1878257 is a prime.

It is a Duffinian number.

1880305 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1880305.

It is not an unprimeable number, because it can be changed into a prime (1880309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219 + ... + 1951.

It is an arithmetic number, because the mean of its divisors is an integer number (166464).

2^1880305 is an apocalyptic number.

It is an amenable number.

1880305 is a deficient number, since it is larger than the sum of its proper divisors (783119).

1880305 is a wasteful number, since it uses less digits than its factorization.

1880305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1880305 is about 1371.2421376256. The cubic root of 1880305 is about 123.4267898094.

The spelling of 1880305 in words is "one million, eight hundred eighty thousand, three hundred five".