138850177 has 2 divisors, whose sum is σ = 138850178. Its totient is φ = 138850176.

The previous prime is 138850171. The next prime is 138850181. The reversal of 138850177 is 771058831.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78694641 + 60155536 = 8871^2 + 7756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138850177 is a prime.

It is not a weakly prime, because it can be changed into another prime (138850171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69425088 + 69425089.

It is an arithmetic number, because the mean of its divisors is an integer number (69425089).

Almost surely, 2^138850177 is an apocalyptic number.

It is an amenable number.

138850177 is a deficient number, since it is larger than the sum of its proper divisors (1).

138850177 is an equidigital number, since it uses as much as digits as its factorization.

138850177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 40.

The square root of 138850177 is about 11783.4704989659. The cubic root of 138850177 is about 517.8239651189.

The spelling of 138850177 in words is "one hundred thirty-eight million, eight hundred fifty thousand, one hundred seventy-seven".