138714232187 has 2 divisors, whose sum is σ = 138714232188. Its totient is φ = 138714232186.

The previous prime is 138714232177. The next prime is 138714232247. The reversal of 138714232187 is 781232417831.

It is a weak prime.

It is an emirp because it is prime and its reverse (781232417831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138714232187 - 2¹² = 138714228091 is a prime.

It is a super-2 number, since 2×138714232187² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (138714232177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69357116093 + 69357116094.

It is an arithmetic number, because the mean of its divisors is an integer number (69357116094).

Almost surely, 2^138714232187 is an apocalyptic number.

138714232187 is a deficient number, since it is larger than the sum of its proper divisors (1).

138714232187 is an equidigital number, since it uses as much as digits as its factorization.

138714232187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 47.

The spelling of 138714232187 in words is "one hundred thirty-eight billion, seven hundred fourteen million, two hundred thirty-two thousand, one hundred eighty-seven".