138461371 has 2 divisors, whose sum is σ = 138461372. Its totient is φ = 138461370.

The previous prime is 138461359. The next prime is 138461423. The reversal of 138461371 is 173164831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138461371 - 2¹³ = 138453179 is a prime.

It is not a weakly prime, because it can be changed into another prime (138461321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69230685 + 69230686.

It is an arithmetic number, because the mean of its divisors is an integer number (69230686).

Almost surely, 2^138461371 is an apocalyptic number.

138461371 is a deficient number, since it is larger than the sum of its proper divisors (1).

138461371 is an equidigital number, since it uses as much as digits as its factorization.

138461371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 34.

The square root of 138461371 is about 11766.9609925418. The cubic root of 138461371 is about 517.3401792018.

The spelling of 138461371 in words is "one hundred thirty-eight million, four hundred sixty-one thousand, three hundred seventy-one".