1803603672 has 160 divisors (see below), whose sum is σ = 5468435280. Its totient is φ = 552096000.

The previous prime is 1803603667. The next prime is 1803603691. The reversal of 1803603672 is 2763063081.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2113998 + ... + 2114850.

Almost surely, 2^1803603672 is an apocalyptic number.

1803603672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1803603672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2734217640).

1803603672 is an abundant number, since it is smaller than the sum of its proper divisors (3664831608).

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

1803603672 is a wasteful number, since it uses less digits than its factorization.

1803603672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135 (or 1122 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1803603672 is about 42468.8553177502. The cubic root of 1803603672 is about 1217.2516454183.

The spelling of 1803603672 in words is "one billion, eight hundred three million, six hundred three thousand, six hundred seventy-two".