138356196 has 48 divisors (see below), whose sum is σ = 356166720. Its totient is φ = 41451520.

The previous prime is 138356189. The next prime is 138356261. The reversal of 138356196 is 691653831.

It is a happy number.

138356196 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5860 + ... + 17636.

It is an arithmetic number, because the mean of its divisors is an integer number (7420140).

Almost surely, 2^138356196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138356196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178083360).

138356196 is an abundant number, since it is smaller than the sum of its proper divisors (217810524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138356196 is a wasteful number, since it uses less digits than its factorization.

138356196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11884 (or 11882 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 138356196 is about 11762.4910626959. The cubic root of 138356196 is about 517.2091558083.

The spelling of 138356196 in words is "one hundred thirty-eight million, three hundred fifty-six thousand, one hundred ninety-six".