138220196 has 48 divisors (see below), whose sum is σ = 257359872. Its totient is φ = 64864800.

The previous prime is 138220169. The next prime is 138220207. The reversal of 138220196 is 691022831.

138220196 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055051 + ... + 1055181.

It is an arithmetic number, because the mean of its divisors is an integer number (5361664).

Almost surely, 2^138220196 is an apocalyptic number.

It is an amenable number.

138220196 is a deficient number, since it is larger than the sum of its proper divisors (119139676).

138220196 is a wasteful number, since it uses less digits than its factorization.

138220196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 138220196 is about 11756.7085529922. The cubic root of 138220196 is about 517.0396332105.

The spelling of 138220196 in words is "one hundred thirty-eight million, two hundred twenty thousand, one hundred ninety-six".