1874189 has 2 divisors, whose sum is σ = 1874190. Its totient is φ = 1874188.

The previous prime is 1874177. The next prime is 1874207. The reversal of 1874189 is 9814781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1304164 + 570025 = 1142^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 1874189 - 2²⁰ = 825613 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1877189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 937094 + 937095.

It is an arithmetic number, because the mean of its divisors is an integer number (937095).

2^1874189 is an apocalyptic number.

It is an amenable number.

1874189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1874189 is an equidigital number, since it uses as much as digits as its factorization.

1874189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 38.

The square root of 1874189 is about 1369.0102264045. The cubic root of 1874189 is about 123.2928225038.

The spelling of 1874189 in words is "one million, eight hundred seventy-four thousand, one hundred eighty-nine".