138114191 has 4 divisors (see below), whose sum is σ = 138138000. Its totient is φ = 138090384.

The previous prime is 138114181. The next prime is 138114233. The reversal of 138114191 is 191411831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138114191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138114101) 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, 3110 + ... + 16908.

It is an arithmetic number, because the mean of its divisors is an integer number (34534500).

Almost surely, 2^138114191 is an apocalyptic number.

138114191 is a deficient number, since it is larger than the sum of its proper divisors (23809).

138114191 is a wasteful number, since it uses less digits than its factorization.

138114191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23808.

The product of its digits is 864, while the sum is 29.

The square root of 138114191 is about 11752.1994111741. The cubic root of 138114191 is about 516.9074219386.

The spelling of 138114191 in words is "one hundred thirty-eight million, one hundred fourteen thousand, one hundred ninety-one".