1803538368 has 168 divisors, whose sum is σ = 5473395200. Its totient is φ = 566217216.

The previous prime is 1803538351. The next prime is 1803538403. The reversal of 1803538368 is 8638353081.

1803538368 is a `hidden beast` number, since 1 + 80 + 3 + 538 + 36 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2440143 + ... + 2440881.

Almost surely, 2^1803538368 is an apocalyptic number.

1803538368 is a gapful number since it is divisible by the number (18) 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 1803538368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2736697600).

1803538368 is an abundant number, since it is smaller than the sum of its proper divisors (3669856832).

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

1803538368 is a wasteful number, since it uses less digits than its factorization.

1803538368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 1803538368 is about 42468.0864650151. The cubic root of 1803538368 is about 1217.2369540235.

The spelling of 1803538368 in words is "one billion, eight hundred three million, five hundred thirty-eight thousand, three hundred sixty-eight".