138870167 has 2 divisors, whose sum is σ = 138870168. Its totient is φ = 138870166.

The previous prime is 138870133. The next prime is 138870191. The reversal of 138870167 is 761078831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138870167 - 2⁶ = 138870103 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138870197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69435083 + 69435084.

It is an arithmetic number, because the mean of its divisors is an integer number (69435084).

Almost surely, 2^138870167 is an apocalyptic number.

138870167 is a deficient number, since it is larger than the sum of its proper divisors (1).

138870167 is an equidigital number, since it uses as much as digits as its factorization.

138870167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 138870167 is about 11784.3186905311. The cubic root of 138870167 is about 517.8488139753.

The spelling of 138870167 in words is "one hundred thirty-eight million, eight hundred seventy thousand, one hundred sixty-seven".