138198909164 has 24 divisors (see below), whose sum is σ = 248043182688. Its totient is φ = 67346697600.

The previous prime is 138198909119. The next prime is 138198909169. The reversal of 138198909164 is 461909891831.

It is not an unprimeable number, because it can be changed into a prime (138198909169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2126537 + ... + 2190560.

It is an arithmetic number, because the mean of its divisors is an integer number (10335132612).

Almost surely, 2^138198909164 is an apocalyptic number.

It is an amenable number.

138198909164 is a deficient number, since it is larger than the sum of its proper divisors (109844273524).

138198909164 is a wasteful number, since it uses less digits than its factorization.

138198909164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4317305 (or 4317303 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 59.

The spelling of 138198909164 in words is "one hundred thirty-eight billion, one hundred ninety-eight million, nine hundred nine thousand, one hundred sixty-four".