138068850 has 48 divisors (see below), whose sum is σ = 348236640. Its totient is φ = 36192000.

The previous prime is 138068837. The next prime is 138068863. The reversal of 138068850 is 58860831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (138068837) and next prime (138068863).

It is a junction number, because it is equal to n+sod(n) for n = 138068799 and 138068808.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1050 + ... + 16650.

It is an arithmetic number, because the mean of its divisors is an integer number (7254930).

Almost surely, 2^138068850 is an apocalyptic number.

138068850 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 138068850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174118320).

138068850 is an abundant number, since it is smaller than the sum of its proper divisors (210167790).

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

138068850 is a wasteful number, since it uses less digits than its factorization.

138068850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15675 (or 15670 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 138068850 is about 11750.2702096590. The cubic root of 138068850 is about 516.8508512020.

The spelling of 138068850 in words is "one hundred thirty-eight million, sixty-eight thousand, eight hundred fifty".