3663805956 has 24 divisors (see below), whose sum is σ = 8554086240. Its totient is φ = 1220524992.

The previous prime is 3663805903. The next prime is 3663805963. The reversal of 3663805956 is 6595083663.

It is a junction number, because it is equal to n+sod(n) for n = 3663805899 and 3663805908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72246 + ... + 112013.

It is an arithmetic number, because the mean of its divisors is an integer number (356420260).

Almost surely, 2^3663805956 is an apocalyptic number.

It is an amenable number.

3663805956 is an abundant number, since it is smaller than the sum of its proper divisors (4890280284).

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

3663805956 is a wasteful number, since it uses less digits than its factorization.

3663805956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185923 (or 185921 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 51.

The square root of 3663805956 is about 60529.3809319078. The cubic root of 3663805956 is about 1541.6205401318.

The spelling of 3663805956 in words is "three billion, six hundred sixty-three million, eight hundred five thousand, nine hundred fifty-six".