9198013 has 4 divisors (see below), whose sum is σ = 10034208. Its totient is φ = 8361820.

The previous prime is 9197989. The next prime is 9198019. The reversal of 9198013 is 3108919.

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 a de Polignac number, because none of the positive numbers 2^k-9198013 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9198019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418081 + ... + 418102.

It is an arithmetic number, because the mean of its divisors is an integer number (2508552).

Almost surely, 2^9198013 is an apocalyptic number.

It is an amenable number.

9198013 is a deficient number, since it is larger than the sum of its proper divisors (836195).

9198013 is a wasteful number, since it uses less digits than its factorization.

9198013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836194.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 9198013 is about 3032.8226126828. The cubic root of 9198013 is about 209.5228243370.

The spelling of 9198013 in words is "nine million, one hundred ninety-eight thousand, thirteen".