9198138 has 16 divisors (see below), whose sum is σ = 18446976. Its totient is φ = 3057600.

The previous prime is 9198113. The next prime is 9198151. The reversal of 9198138 is 8318919.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9198096 and 9198105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495 + ... + 4317.

It is an arithmetic number, because the mean of its divisors is an integer number (1152936).

Almost surely, 2^9198138 is an apocalyptic number.

9198138 is an abundant number, since it is smaller than the sum of its proper divisors (9248838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9198138 is a wasteful number, since it uses less digits than its factorization.

9198138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4229.

The product of its digits is 15552, while the sum is 39.

The square root of 9198138 is about 3032.8432204781. The cubic root of 9198138 is about 209.5237734635.

The spelling of 9198138 in words is "nine million, one hundred ninety-eight thousand, one hundred thirty-eight".