1038437600644 has 6 divisors (see below), whose sum is σ = 1817265801134. Its totient is φ = 519218800320.

The previous prime is 1038437600639. The next prime is 1038437600657. The reversal of 1038437600644 is 4460067348301.

1038437600644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 993785684544 + 44651916100 = 996888^2 + 211310^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1038437600594 and 1038437600603.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129804700077 + ... + 129804700084.

Almost surely, 2^{1038437600644} is an apocalyptic number.

It is an amenable number.

1038437600644 is a deficient number, since it is larger than the sum of its proper divisors (778828200490).

1038437600644 is a wasteful number, since it uses less digits than its factorization.

1038437600644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259609400165 (or 259609400163 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 1038437600644 in words is "one trillion, thirty-eight billion, four hundred thirty-seven million, six hundred thousand, six hundred forty-four".