138067838 has 8 divisors (see below), whose sum is σ = 210193032. Its totient is φ = 68003496.

The previous prime is 138067837. The next prime is 138067861. The reversal of 138067838 is 838760831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138067837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515045 + ... + 515312.

It is an arithmetic number, because the mean of its divisors is an integer number (26274129).

Almost surely, 2^138067838 is an apocalyptic number.

138067838 is a deficient number, since it is larger than the sum of its proper divisors (72125194).

138067838 is a wasteful number, since it uses less digits than its factorization.

138067838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030426.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 138067838 is about 11750.2271467406. The cubic root of 138067838 is about 516.8495884157.

The spelling of 138067838 in words is "one hundred thirty-eight million, sixty-seven thousand, eight hundred thirty-eight".