3621603996 has 18 divisors (see below), whose sum is σ = 9154610192. Its totient is φ = 1207201320.

The previous prime is 3621603967. The next prime is 3621604001. The reversal of 3621603996 is 6993061263.

It is a happy number.

3621603996 is a `hidden beast` number, since 36 + 2 + 1 + 603 + 9 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50300020 + ... + 50300091.

Almost surely, 2^3621603996 is an apocalyptic number.

3621603996 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3621603996 is an abundant number, since it is smaller than the sum of its proper divisors (5533006196).

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

3621603996 is a wasteful number, since it uses less digits than its factorization.

3621603996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100600121 (or 100600116 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 45.

The square root of 3621603996 is about 60179.7640075134. The cubic root of 3621603996 is about 1535.6785572065.

The spelling of 3621603996 in words is "three billion, six hundred twenty-one million, six hundred three thousand, nine hundred ninety-six".