3704443638 has 16 divisors (see below), whose sum is σ = 8467299840. Its totient is φ = 1058412456.

The previous prime is 3704443621. The next prime is 3704443669. The reversal of 3704443638 is 8363444073.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 88201039 = 3704443638 / (3 + 7 + 0 + 4 + 4 + 4 + 3 + 6 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 3704443638.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 44100478 + ... + 44100561.

It is an arithmetic number, because the mean of its divisors is an integer number (529206240).

Almost surely, 2^3704443638 is an apocalyptic number.

3704443638 is an abundant number, since it is smaller than the sum of its proper divisors (4762856202).

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

3704443638 is a wasteful number, since it uses less digits than its factorization.

3704443638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88201051.

The product of its (nonzero) digits is 580608, while the sum is 42.

The square root of 3704443638 is about 60864.1408219980. The cubic root of 3704443638 is about 1547.2993051332.

The spelling of 3704443638 in words is "three billion, seven hundred four million, four hundred forty-three thousand, six hundred thirty-eight".