138190650 has 48 divisors (see below), whose sum is σ = 369080544. Its totient is φ = 34015680.

The previous prime is 138190631. The next prime is 138190697. The reversal of 138190650 is 56091831.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33484 + ... + 37383.

It is an arithmetic number, because the mean of its divisors is an integer number (7689178).

Almost surely, 2^138190650 is an apocalyptic number.

138190650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138190650 is an abundant number, since it is smaller than the sum of its proper divisors (230889894).

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

138190650 is a wasteful number, since it uses less digits than its factorization.

138190650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70895 (or 70890 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 138190650 is about 11755.4519266594. The cubic root of 138190650 is about 517.0027897244.

The spelling of 138190650 in words is "one hundred thirty-eight million, one hundred ninety thousand, six hundred fifty".