1612189 has 2 divisors, whose sum is σ = 1612190. Its totient is φ = 1612188.

The previous prime is 1612183. The next prime is 1612211. The reversal of 1612189 is 9812161.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1304164 + 308025 = 1142^2 + 555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1612189 - 2³ = 1612181 is a prime.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1612181) 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 as a sum of consecutive naturals, namely, 806094 + 806095.

It is an arithmetic number, because the mean of its divisors is an integer number (806095).

2^1612189 is an apocalyptic number.

It is an amenable number.

1612189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612189 is an equidigital number, since it uses as much as digits as its factorization.

1612189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 28.

The square root of 1612189 is about 1269.7200478846. The cubic root of 1612189 is about 117.2569655938.

Subtracting from 1612189 its sum of digits (28), we obtain a palindrome (1612161).

The spelling of 1612189 in words is "one million, six hundred twelve thousand, one hundred eighty-nine".