1803639963996 has 96 divisors (see below), whose sum is σ = 5039333499200. Its totient is φ = 554577166080.

The previous prime is 1803639963967. The next prime is 1803639964003. The reversal of 1803639963996 is 6993699363081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1556826 + ... + 2455806.

Almost surely, 2^{1803639963996} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1803639963996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2519666749600).

1803639963996 is an abundant number, since it is smaller than the sum of its proper divisors (3235693535204).

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

1803639963996 is a wasteful number, since it uses less digits than its factorization.

1803639963996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900436 (or 900428 counting only the distinct ones).

The product of its (nonzero) digits is 306110016, while the sum is 72.

The spelling of 1803639963996 in words is "one trillion, eight hundred three billion, six hundred thirty-nine million, nine hundred sixty-three thousand, nine hundred ninety-six".