3604440138 has 32 divisors (see below), whose sum is σ = 7879292736. Its totient is φ = 1092503808.

The previous prime is 3604440089. The next prime is 3604440139. The reversal of 3604440138 is 8310444063.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3604440099 and 3604440108.

It is not an unprimeable number, because it can be changed into a prime (3604440139) 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 15 ways as a sum of consecutive naturals, for example, 339631 + ... + 350082.

It is an arithmetic number, because the mean of its divisors is an integer number (246227898).

Almost surely, 2^3604440138 is an apocalyptic number.

3604440138 is an abundant number, since it is smaller than the sum of its proper divisors (4274852598).

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

3604440138 is a wasteful number, since it uses less digits than its factorization.

3604440138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689798.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 3604440138 is about 60036.9897479879. The cubic root of 3604440138 is about 1533.2487021447.

The spelling of 3604440138 in words is "three billion, six hundred four million, four hundred forty thousand, one hundred thirty-eight".