138109741 has 8 divisors (see below), whose sum is σ = 172188864. Its totient is φ = 107617920.

The previous prime is 138109709. The next prime is 138109747. The reversal of 138109741 is 147901831.

138109741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138109741 - 2⁵ = 138109709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138109697 and 138109706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138109747) 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, 896740 + ... + 896893.

It is an arithmetic number, because the mean of its divisors is an integer number (21523608).

Almost surely, 2^138109741 is an apocalyptic number.

138109741 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

138109741 is a deficient number, since it is larger than the sum of its proper divisors (34079123).

138109741 is a wasteful number, since it uses less digits than its factorization.

138109741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793651.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 138109741 is about 11752.0100833857. The cubic root of 138109741 is about 516.9018703422.

The spelling of 138109741 in words is "one hundred thirty-eight million, one hundred nine thousand, seven hundred forty-one".