38990433828609 has 12 divisors (see below), whose sum is σ = 56324486947300. Its totient is φ = 25991328052224.

The previous prime is 38990433828571. The next prime is 38990433828611. The reversal of 38990433828609 is 90682833409983.

38990433828609 is a `hidden beast` number, since 3 + 8 + 9 + 9 + 0 + 4 + 3 + 3 + 8 + 2 + 8 + 609 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19639716715584 + 19350717113025 = 4431672^2 + 4398945^2 .

It is not a de Polignac number, because 38990433828609 - 2⁹ = 38990433828097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38990433823609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191100724 + ... + 191304645.

Almost surely, 2^{38990433828609} is an apocalyptic number.

It is an amenable number.

38990433828609 is a deficient number, since it is larger than the sum of its proper divisors (17334053118691).

38990433828609 is a wasteful number, since it uses less digits than its factorization.

38990433828609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382416704 (or 382416701 counting only the distinct ones).

The product of its (nonzero) digits is 483729408, while the sum is 72.

The spelling of 38990433828609 in words is "thirty-eight trillion, nine hundred ninety billion, four hundred thirty-three million, eight hundred twenty-eight thousand, six hundred nine".