138982198 has 8 divisors (see below), whose sum is σ = 208530000. Its totient is φ = 69472200.

The previous prime is 138982171. The next prime is 138982199. The reversal of 138982198 is 891289831.

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

It is a super-2 number, since 2×138982198² = 38632102721822408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138982199) 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, 3048 + ... + 16948.

It is an arithmetic number, because the mean of its divisors is an integer number (26066250).

Almost surely, 2^138982198 is an apocalyptic number.

138982198 is a deficient number, since it is larger than the sum of its proper divisors (69547802).

138982198 is a wasteful number, since it uses less digits than its factorization.

138982198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18902.

The product of its digits is 248832, while the sum is 49.

The square root of 138982198 is about 11789.0711254110. The cubic root of 138982198 is about 517.9880316053.

The spelling of 138982198 in words is "one hundred thirty-eight million, nine hundred eighty-two thousand, one hundred ninety-eight".