9418994871 has 64 divisors (see below), whose sum is σ = 15182952960. Its totient is φ = 5119614720.

The previous prime is 9418994863. The next prime is 9418994987. The reversal of 9418994871 is 1784998149.

It is not a de Polignac number, because 9418994871 - 2³ = 9418994863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9418994831) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 129027291 + ... + 129027363.

It is an arithmetic number, because the mean of its divisors is an integer number (237233640).

Almost surely, 2^9418994871 is an apocalyptic number.

9418994871 is a deficient number, since it is larger than the sum of its proper divisors (5763958089).

9418994871 is an equidigital number, since it uses as much as digits as its factorization.

9418994871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 167 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 60.

The square root of 9418994871 is about 97051.5062788827. The cubic root of 9418994871 is about 2111.8748914804.

The spelling of 9418994871 in words is "nine billion, four hundred eighteen million, nine hundred ninety-four thousand, eight hundred seventy-one".