138163006 has 4 divisors (see below), whose sum is σ = 207244512. Its totient is φ = 69081502.

The previous prime is 138162991. The next prime is 138163007. The reversal of 138163006 is 600361831.

138163006 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138163007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34540750 + ... + 34540753.

It is an arithmetic number, because the mean of its divisors is an integer number (51811128).

Almost surely, 2^138163006 is an apocalyptic number.

138163006 is a deficient number, since it is larger than the sum of its proper divisors (69081506).

138163006 is an equidigital number, since it uses as much as digits as its factorization.

138163006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69081505.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 138163006 is about 11754.2760729872. The cubic root of 138163006 is about 516.9683132524.

The spelling of 138163006 in words is "one hundred thirty-eight million, one hundred sixty-three thousand, six".