9138009605 has 4 divisors (see below), whose sum is σ = 10965611532. Its totient is φ = 7310407680.

The previous prime is 9138009589. The next prime is 9138009619. The reversal of 9138009605 is 5069008319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5069008319 = 103 ⋅49213673.

It can be written as a sum of positive squares in 2 ways, for example, as 4156896676 + 4981112929 = 64474^2 + 70577^2 .

It is not a de Polignac number, because 9138009605 - 2⁴ = 9138009589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913800956 + ... + 913800965.

It is an arithmetic number, because the mean of its divisors is an integer number (2741402883).

Almost surely, 2^9138009605 is an apocalyptic number.

It is an amenable number.

9138009605 is a deficient number, since it is larger than the sum of its proper divisors (1827601927).

9138009605 is a wasteful number, since it uses less digits than its factorization.

9138009605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827601926.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 9138009605 is about 95592.9370037347. The cubic root of 9138009605 is about 2090.6622143220.

The spelling of 9138009605 in words is "nine billion, one hundred thirty-eight million, nine thousand, six hundred five".