3638820104 has 16 divisors (see below), whose sum is σ = 6824533500. Its totient is φ = 1818944512.

The previous prime is 3638820079. The next prime is 3638820109. The reversal of 3638820104 is 4010288363.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3622836100 + 15984004 = 60190^2 + 3998^2 .

It is not an unprimeable number, because it can be changed into a prime (3638820109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23777 + ... + 88560.

Almost surely, 2^3638820104 is an apocalyptic number.

It is an amenable number.

3638820104 is a deficient number, since it is larger than the sum of its proper divisors (3185713396).

3638820104 is a wasteful number, since it uses less digits than its factorization.

3638820104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116392 (or 116388 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 3638820104 is about 60322.6334305789. The cubic root of 3638820104 is about 1538.1081091009.

The spelling of 3638820104 in words is "three billion, six hundred thirty-eight million, eight hundred twenty thousand, one hundred four".