3639536812 has 6 divisors (see below), whose sum is σ = 6369189428. Its totient is φ = 1819768404.

The previous prime is 3639536779. The next prime is 3639536819. The reversal of 3639536812 is 2186359363.

It is not an unprimeable number, because it can be changed into a prime (3639536819) by changing a digit.

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 as a sum of consecutive naturals, namely, 454942098 + ... + 454942105.

Almost surely, 2^3639536812 is an apocalyptic number.

It is an amenable number.

3639536812 is a deficient number, since it is larger than the sum of its proper divisors (2729652616).

3639536812 is a wasteful number, since it uses less digits than its factorization.

3639536812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909884207 (or 909884205 counting only the distinct ones).

The product of its digits is 699840, while the sum is 46.

The square root of 3639536812 is about 60328.5737606982. The cubic root of 3639536812 is about 1538.2090852404.

The spelling of 3639536812 in words is "three billion, six hundred thirty-nine million, five hundred thirty-six thousand, eight hundred twelve".