1804419 has 18 divisors (see below), whose sum is σ = 2731820. Its totient is φ = 1147608.

The previous prime is 1804403. The next prime is 1804421. The reversal of 1804419 is 9144081.

It is not a de Polignac number, because 1804419 - 2⁴ = 1804403 is a prime.

It is a super-2 number, since 2×1804419² = 6511855855122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

1804419 is a lucky number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 1804392 and 1804401.

It is not an unprimeable number, because it can be changed into a prime (1804459) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4572 + ... + 4950.

2^1804419 is an apocalyptic number.

1804419 is a deficient number, since it is larger than the sum of its proper divisors (927401).

1804419 is a wasteful number, since it uses less digits than its factorization.

1804419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1804419 is about 1343.2866410413. The cubic root of 1804419 is about 121.7435039338.

The spelling of 1804419 in words is "one million, eight hundred four thousand, four hundred nineteen".