1840469 has 2 divisors, whose sum is σ = 1840470. Its totient is φ = 1840468.

The previous prime is 1840459. The next prime is 1840493. The reversal of 1840469 is 9640481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1787569 + 52900 = 1337^2 + 230^2 .

It is an emirp because it is prime and its reverse (9640481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1840469 - 2⁴ = 1840453 is a prime.

It is a super-2 number, since 2×1840469² = 6774652279922, 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 (1840429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920234 + 920235.

It is an arithmetic number, because the mean of its divisors is an integer number (920235).

2^1840469 is an apocalyptic number.

It is an amenable number.

1840469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840469 is an equidigital number, since it uses as much as digits as its factorization.

1840469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1840469 is about 1356.6388613039. The cubic root of 1840469 is about 122.5489239540.

The spelling of 1840469 in words is "one million, eight hundred forty thousand, four hundred sixty-nine".