198135013 has 16 divisors (see below), whose sum is σ = 208183360. Its totient is φ = 188407296.

The previous prime is 198134987. The next prime is 198135019. The reversal of 198135013 is 310531891.

It is a cyclic number.

It is not a de Polignac number, because 198135013 - 2²¹ = 196037861 is a prime.

It is a super-3 number, since 3×198135013³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198135019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279103 + ... + 279811.

It is an arithmetic number, because the mean of its divisors is an integer number (13011460).

Almost surely, 2^198135013 is an apocalyptic number.

It is an amenable number.

198135013 is a deficient number, since it is larger than the sum of its proper divisors (10048347).

198135013 is an equidigital number, since it uses as much as digits as its factorization.

198135013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 198135013 is about 14076.0439399712. The cubic root of 198135013 is about 582.9801163601.

The spelling of 198135013 in words is "one hundred ninety-eight million, one hundred thirty-five thousand, thirteen".