9818077389 has 4 divisors (see below), whose sum is σ = 13090769856. Its totient is φ = 6545384924.

The previous prime is 9818077349. The next prime is 9818077427. The reversal of 9818077389 is 9837708189.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9818077389 - 2¹¹ = 9818075341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9818077319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1636346229 + ... + 1636346234.

It is an arithmetic number, because the mean of its divisors is an integer number (3272692464).

Almost surely, 2^9818077389 is an apocalyptic number.

It is an amenable number.

9818077389 is a deficient number, since it is larger than the sum of its proper divisors (3272692467).

9818077389 is a wasteful number, since it uses less digits than its factorization.

9818077389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3272692466.

The product of its (nonzero) digits is 6096384, while the sum is 60.

The square root of 9818077389 is about 99086.2119015557. The cubic root of 9818077389 is about 2141.2899746522.

The spelling of 9818077389 in words is "nine billion, eight hundred eighteen million, seventy-seven thousand, three hundred eighty-nine".