9198913 has 2 divisors, whose sum is σ = 9198914. Its totient is φ = 9198912.

The previous prime is 9198911. The next prime is 9198941. The reversal of 9198913 is 3198919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8254129 + 944784 = 2873^2 + 972^2 .

It is an emirp because it is prime and its reverse (3198919) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9198913 - 2¹ = 9198911 is a prime.

Together with 9198911, it forms a pair of twin primes.

9198913 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9198911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4599456 + 4599457.

It is an arithmetic number, because the mean of its divisors is an integer number (4599457).

Almost surely, 2^9198913 is an apocalyptic number.

It is an amenable number.

9198913 is a deficient number, since it is larger than the sum of its proper divisors (1).

9198913 is an equidigital number, since it uses as much as digits as its factorization.

9198913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 40.

The square root of 9198913 is about 3032.9709856838. The cubic root of 9198913 is about 209.5296578561.

The spelling of 9198913 in words is "nine million, one hundred ninety-eight thousand, nine hundred thirteen".