198132139 has 4 divisors (see below), whose sum is σ = 200055856. Its totient is φ = 196208424.

The previous prime is 198132113. The next prime is 198132163. The reversal of 198132139 is 931231891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198132139 - 2¹¹ = 198130091 is a prime.

It is a super-3 number, since 3×198132139³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198132098 and 198132107.

It is not an unprimeable number, because it can be changed into a prime (198132839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 961704 + ... + 961909.

It is an arithmetic number, because the mean of its divisors is an integer number (50013964).

Almost surely, 2^198132139 is an apocalyptic number.

198132139 is a deficient number, since it is larger than the sum of its proper divisors (1923717).

198132139 is a wasteful number, since it uses less digits than its factorization.

198132139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923716.

The product of its digits is 11664, while the sum is 37.

The square root of 198132139 is about 14075.9418512581. The cubic root of 198132139 is about 582.9772975869.

It can be divided in two parts, 19813 and 2139, that added together give a cube (21952 = 28³).

The spelling of 198132139 in words is "one hundred ninety-eight million, one hundred thirty-two thousand, one hundred thirty-nine".