198139713 has 4 divisors (see below), whose sum is σ = 264186288. Its totient is φ = 132093140.

The previous prime is 198139691. The next prime is 198139717. The reversal of 198139713 is 317931891.

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 not a de Polignac number, because 198139713 - 2⁶ = 198139649 is a prime.

It is a super-3 number, since 3×198139713³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (198139717) 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 3 ways as a sum of consecutive naturals, for example, 33023283 + ... + 33023288.

It is an arithmetic number, because the mean of its divisors is an integer number (66046572).

Almost surely, 2^198139713 is an apocalyptic number.

It is an amenable number.

198139713 is a deficient number, since it is larger than the sum of its proper divisors (66046575).

198139713 is an equidigital number, since it uses as much as digits as its factorization.

198139713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66046574.

The product of its digits is 40824, while the sum is 42.

The square root of 198139713 is about 14076.2108892983. The cubic root of 198139713 is about 582.9847259860.

The spelling of 198139713 in words is "one hundred ninety-eight million, one hundred thirty-nine thousand, seven hundred thirteen".