3638618604532 has 6 divisors (see below), whose sum is σ = 6367582557938. Its totient is φ = 1819309302264.

The previous prime is 3638618604503. The next prime is 3638618604637. The reversal of 3638618604532 is 2354068168363.

It can be written as a sum of positive squares in only one way, i.e., 3638304464356 + 314140176 = 1907434^2 + 17724^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454827325563 + ... + 454827325570.

Almost surely, 2^{3638618604532} is an apocalyptic number.

It is an amenable number.

3638618604532 is a deficient number, since it is larger than the sum of its proper divisors (2728963953406).

3638618604532 is a wasteful number, since it uses less digits than its factorization.

3638618604532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909654651137 (or 909654651135 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 55.

The spelling of 3638618604532 in words is "three trillion, six hundred thirty-eight billion, six hundred eighteen million, six hundred four thousand, five hundred thirty-two".