1809000469 has 16 divisors (see below), whose sum is σ = 1936025280. Its totient is φ = 1685249280.

The previous prime is 1809000467. The next prime is 1809000493. The reversal of 1809000469 is 9640009081.

It is a cyclic number.

It is not a de Polignac number, because 1809000469 - 2¹ = 1809000467 is a prime.

It is a super-2 number, since 2×1809000469² = 6544965393684439922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1809000461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1120707 + ... + 1122319.

It is an arithmetic number, because the mean of its divisors is an integer number (121001580).

Almost surely, 2^1809000469 is an apocalyptic number.

1809000469 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1809000469 is a deficient number, since it is larger than the sum of its proper divisors (127024811).

1809000469 is a wasteful number, since it uses less digits than its factorization.

1809000469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1809000469 is about 42532.3461497247. The cubic root of 1809000469 is about 1218.4645354331.

The spelling of 1809000469 in words is "one billion, eight hundred nine million, four hundred sixty-nine", and thus it is an aban number.