1638090009017 has 16 divisors (see below), whose sum is σ = 2048860929024. Its totient is φ = 1272329466000.

The previous prime is 1638090009013. The next prime is 1638090009091. The reversal of 1638090009017 is 7109000908361.

It is a cyclic number.

It is not a de Polignac number, because 1638090009017 - 2² = 1638090009013 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1638090009013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34178459 + ... + 34226352.

It is an arithmetic number, because the mean of its divisors is an integer number (128053808064).

Almost surely, 2^{1638090009017} is an apocalyptic number.

It is an amenable number.

1638090009017 is a deficient number, since it is larger than the sum of its proper divisors (410770920007).

1638090009017 is a wasteful number, since it uses less digits than its factorization.

1638090009017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68405140.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 1638090009017 in words is "one trillion, six hundred thirty-eight billion, ninety million, nine thousand, seventeen".