3639857072 has 10 divisors (see below), whose sum is σ = 7052223108. Its totient is φ = 1819928528.

The previous prime is 3639857069. The next prime is 3639857099. The reversal of 3639857072 is 2707589363.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3639857072.

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 as a sum of consecutive naturals, namely, 113745518 + ... + 113745549.

Almost surely, 2^3639857072 is an apocalyptic number.

It is an amenable number.

3639857072 is a deficient number, since it is larger than the sum of its proper divisors (3412366036).

3639857072 is a wasteful number, since it uses less digits than its factorization.

3639857072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227491075 (or 227491069 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 50.

The square root of 3639857072 is about 60331.2280000996. The cubic root of 3639857072 is about 1538.2542020065.

The spelling of 3639857072 in words is "three billion, six hundred thirty-nine million, eight hundred fifty-seven thousand, seventy-two".