138491141 has 2 divisors, whose sum is σ = 138491142. Its totient is φ = 138491140.

The previous prime is 138491123. The next prime is 138491183. The reversal of 138491141 is 141194831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131010916 + 7480225 = 11446^2 + 2735^2 .

It is an emirp because it is prime and its reverse (141194831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138491141 - 2¹⁰ = 138490117 is a prime.

It is a super-2 number, since 2×138491141² = 38359592270963762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138491098 and 138491107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138491191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69245570 + 69245571.

It is an arithmetic number, because the mean of its divisors is an integer number (69245571).

Almost surely, 2^138491141 is an apocalyptic number.

It is an amenable number.

138491141 is a deficient number, since it is larger than the sum of its proper divisors (1).

138491141 is an equidigital number, since it uses as much as digits as its factorization.

138491141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 32.

The square root of 138491141 is about 11768.2259070771. The cubic root of 138491141 is about 517.3772535939.

The spelling of 138491141 in words is "one hundred thirty-eight million, four hundred ninety-one thousand, one hundred forty-one".