138871363 has 2 divisors, whose sum is σ = 138871364. Its totient is φ = 138871362.

The previous prime is 138871357. The next prime is 138871391. The reversal of 138871363 is 363178831.

It is a weak prime.

It is an emirp because it is prime and its reverse (363178831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138871363 - 2¹³ = 138863171 is a prime.

It is a super-2 number, since 2×138871363² = 38570510922955538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (138871393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69435681 + 69435682.

It is an arithmetic number, because the mean of its divisors is an integer number (69435682).

Almost surely, 2^138871363 is an apocalyptic number.

138871363 is a deficient number, since it is larger than the sum of its proper divisors (1).

138871363 is an equidigital number, since it uses as much as digits as its factorization.

138871363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 138871363 is about 11784.3694358247. The cubic root of 138871363 is about 517.8503006047.

The spelling of 138871363 in words is "one hundred thirty-eight million, eight hundred seventy-one thousand, three hundred sixty-three".