138544610 has 16 divisors (see below), whose sum is σ = 253103616. Its totient is φ = 54590448.

The previous prime is 138544589. The next prime is 138544619. The reversal of 138544610 is 16445831.

138544610 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (138544619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102722 + ... + 104061.

It is an arithmetic number, because the mean of its divisors is an integer number (15818976).

Almost surely, 2^138544610 is an apocalyptic number.

138544610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138544610 is a deficient number, since it is larger than the sum of its proper divisors (114559006).

138544610 is a wasteful number, since it uses less digits than its factorization.

138544610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206857.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 138544610 is about 11770.4974406352. The cubic root of 138544610 is about 517.4438284539.

The spelling of 138544610 in words is "one hundred thirty-eight million, five hundred forty-four thousand, six hundred ten".