138346650 has 96 divisors (see below), whose sum is σ = 410598720. Its totient is φ = 34050240.

The previous prime is 138346643. The next prime is 138346661. The reversal of 138346650 is 56643831.

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 47 ways as a sum of consecutive naturals, for example, 13609 + ... + 21491.

It is an arithmetic number, because the mean of its divisors is an integer number (4277070).

Almost surely, 2^138346650 is an apocalyptic number.

138346650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 138346650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205299360).

138346650 is an abundant number, since it is smaller than the sum of its proper divisors (272252070).

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

138346650 is a wasteful number, since it uses less digits than its factorization.

138346650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7917 (or 7906 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 138346650 is about 11762.0852743040. The cubic root of 138346650 is about 517.1972604438.

The spelling of 138346650 in words is "one hundred thirty-eight million, three hundred forty-six thousand, six hundred fifty".