1809000468 has 36 divisors (see below), whose sum is σ = 4988456928. Its totient is φ = 548181840.

The previous prime is 1809000467. The next prime is 1809000493. The reversal of 1809000468 is 8640009081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 2283696 + ... + 2284487.

It is an arithmetic number, because the mean of its divisors is an integer number (138568248).

Almost surely, 2^1809000468 is an apocalyptic number.

1809000468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1809000468 is an abundant number, since it is smaller than the sum of its proper divisors (3179456460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1809000468 is a wasteful number, since it uses less digits than its factorization.

1809000468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4568204 (or 4568199 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1809000468 is about 42532.3461379689. The cubic root of 1809000468 is about 1218.4645352086.

The spelling of 1809000468 in words is "one billion, eight hundred nine million, four hundred sixty-eight", and thus it is an aban number.