138308650 has 24 divisors (see below), whose sum is σ = 257599584. Its totient is φ = 55249200.

The previous prime is 138308629. The next prime is 138308689. The reversal of 138308650 is 56803831.

It is a happy number.

138308650 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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50209 + ... + 52891.

It is an arithmetic number, because the mean of its divisors is an integer number (10733316).

Almost surely, 2^138308650 is an apocalyptic number.

138308650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138308650 is a deficient number, since it is larger than the sum of its proper divisors (119290934).

138308650 is a wasteful number, since it uses less digits than its factorization.

138308650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726 (or 3721 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 138308650 is about 11760.4698035410. The cubic root of 138308650 is about 517.1499028446.

The spelling of 138308650 in words is "one hundred thirty-eight million, three hundred eight thousand, six hundred fifty".