1138189139 has 2 divisors, whose sum is σ = 1138189140. Its totient is φ = 1138189138.

The previous prime is 1138189133. The next prime is 1138189141. The reversal of 1138189139 is 9319818311.

It is a strong prime.

It is an emirp because it is prime and its reverse (9319818311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138189139 is a prime.

It is a super-2 number, since 2×1138189139² = 2590949032275122642, which contains 22 as substring.

Together with 1138189141, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1138189139.

It is not a weakly prime, because it can be changed into another prime (1138189133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569094569 + 569094570.

It is an arithmetic number, because the mean of its divisors is an integer number (569094570).

Almost surely, 2^1138189139 is an apocalyptic number.

1138189139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138189139 is an equidigital number, since it uses as much as digits as its factorization.

1138189139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 44.

The square root of 1138189139 is about 33737.0588374268. The cubic root of 1138189139 is about 1044.0905035847.

The spelling of 1138189139 in words is "one billion, one hundred thirty-eight million, one hundred eighty-nine thousand, one hundred thirty-nine".