138001606 has 8 divisors (see below), whose sum is σ = 207075024. Its totient is φ = 68976600.

The previous prime is 138001519. The next prime is 138001621. The reversal of 138001606 is 606100831.

138001606 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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3850 + ... + 17053.

It is an arithmetic number, because the mean of its divisors is an integer number (25884378).

Almost surely, 2^138001606 is an apocalyptic number.

138001606 is a deficient number, since it is larger than the sum of its proper divisors (69073418).

138001606 is a wasteful number, since it uses less digits than its factorization.

138001606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24206.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 138001606 is about 11747.4084801713. The cubic root of 138001606 is about 516.7669298771.

The spelling of 138001606 in words is "one hundred thirty-eight million, one thousand, six hundred six".