1880189 has 2 divisors, whose sum is σ = 1880190. Its totient is φ = 1880188.

The previous prime is 1880167. The next prime is 1880201. The reversal of 1880189 is 9810881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1612900 + 267289 = 1270^2 + 517^2 .

It is an emirp because it is prime and its reverse (9810881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1880189 - 2¹² = 1876093 is a prime.

It is a super-2 number, since 2×1880189² = 7070221351442, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1880129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940094 + 940095.

It is an arithmetic number, because the mean of its divisors is an integer number (940095).

2^1880189 is an apocalyptic number.

It is an amenable number.

1880189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1880189 is an equidigital number, since it uses as much as digits as its factorization.

1880189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 1880189 is about 1371.1998395566. The cubic root of 1880189 is about 123.4242516038.

The spelling of 1880189 in words is "one million, eight hundred eighty thousand, one hundred eighty-nine".