9838557775 has 12 divisors (see below), whose sum is σ = 12201127312. Its totient is φ = 7869997440.

The previous prime is 9838557769. The next prime is 9838557821. The reversal of 9838557775 is 5777558389.

It is a happy number.

It is not a de Polignac number, because 9838557775 - 2⁷ = 9838557647 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 11 ways as a sum of consecutive naturals, for example, 327799 + ... + 356551.

Almost surely, 2^9838557775 is an apocalyptic number.

9838557775 is a deficient number, since it is larger than the sum of its proper divisors (2362569537).

9838557775 is a wasteful number, since it uses less digits than its factorization.

9838557775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42450 (or 42445 counting only the distinct ones).

The product of its digits is 74088000, while the sum is 64.

The square root of 9838557775 is about 99189.5043590803. The cubic root of 9838557775 is about 2142.7778418960. Note that the first 3 decimals are identical.

The spelling of 9838557775 in words is "nine billion, eight hundred thirty-eight million, five hundred fifty-seven thousand, seven hundred seventy-five".