198397283135 has 4 divisors (see below), whose sum is σ = 238076739768. Its totient is φ = 158717826504.

The previous prime is 198397283107. The next prime is 198397283153. The reversal of 198397283135 is 531382793891.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531382793891 = 43321 ⋅12266171.

It is a cyclic number.

It is not a de Polignac number, because 198397283135 - 2¹⁴ = 198397266751 is a prime.

It is a super-2 number, since 2×198397283135² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19839728309 + ... + 19839728318.

It is an arithmetic number, because the mean of its divisors is an integer number (59519184942).

Almost surely, 2^198397283135 is an apocalyptic number.

198397283135 is a deficient number, since it is larger than the sum of its proper divisors (39679456633).

198397283135 is an equidigital number, since it uses as much as digits as its factorization.

198397283135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39679456632.

The product of its digits is 9797760, while the sum is 59.

The spelling of 198397283135 in words is "one hundred ninety-eight billion, three hundred ninety-seven million, two hundred eighty-three thousand, one hundred thirty-five".