1800816432 has 40 divisors (see below), whose sum is σ = 4765580400. Its totient is φ = 585630720.

The previous prime is 1800816431. The next prime is 1800816449. The reversal of 1800816432 is 2346180081.

It is a super-2 number, since 2×1800816432² = 6485879643522421248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1800816393 and 1800816402.

It is not an unprimeable number, because it can be changed into a prime (1800816431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455557 + ... + 459492.

It is an arithmetic number, because the mean of its divisors is an integer number (119139510).

Almost surely, 2^1800816432 is an apocalyptic number.

1800816432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1800816432 is an abundant number, since it is smaller than the sum of its proper divisors (2964763968).

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

1800816432 is a wasteful number, since it uses less digits than its factorization.

1800816432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915101 (or 915095 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1800816432 is about 42436.0275237916. The cubic root of 1800816432 is about 1216.6242862909.

The spelling of 1800816432 in words is "one billion, eight hundred million, eight hundred sixteen thousand, four hundred thirty-two".