138002198 has 8 divisors (see below), whose sum is σ = 208160280. Its totient is φ = 68615440.

The previous prime is 138002197. The next prime is 138002201. The reversal of 138002198 is 891200831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138002197) 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, 192383 + ... + 193098.

It is an arithmetic number, because the mean of its divisors is an integer number (26020035).

Almost surely, 2^138002198 is an apocalyptic number.

138002198 is a deficient number, since it is larger than the sum of its proper divisors (70158082).

138002198 is a wasteful number, since it uses less digits than its factorization.

138002198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385662.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 138002198 is about 11747.4336771909. The cubic root of 138002198 is about 516.7676688192.

The spelling of 138002198 in words is "one hundred thirty-eight million, two thousand, one hundred ninety-eight".