1894369 has 2 divisors, whose sum is σ = 1894370. Its totient is φ = 1894368.

The previous prime is 1894339. The next prime is 1894381. The reversal of 1894369 is 9634981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1411344 + 483025 = 1188^2 + 695^2 .

It is an emirp because it is prime and its reverse (9634981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1894369 - 2⁵ = 1894337 is a prime.

It is a super-2 number, since 2×1894369² = 7177267816322, which contains 22 as substring.

It is a Chen prime.

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

It is not a weakly prime, because it can be changed into another prime (1894339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 947184 + 947185.

It is an arithmetic number, because the mean of its divisors is an integer number (947185).

2^1894369 is an apocalyptic number.

It is an amenable number.

1894369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1894369 is an equidigital number, since it uses as much as digits as its factorization.

1894369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 1894369 is about 1376.3607811907. The cubic root of 1894369 is about 123.7337549672.

The spelling of 1894369 in words is "one million, eight hundred ninety-four thousand, three hundred sixty-nine".