11938889173 has 2 divisors, whose sum is σ = 11938889174. Its totient is φ = 11938889172.

The previous prime is 11938889161. The next prime is 11938889189. The reversal of 11938889173 is 37198883911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6753881124 + 5185008049 = 82182^2 + 72007^2 .

It is a cyclic number.

It is not a de Polignac number, because 11938889173 - 2¹³ = 11938880981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11938889113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5969444586 + 5969444587.

It is an arithmetic number, because the mean of its divisors is an integer number (5969444587).

Almost surely, 2^11938889173 is an apocalyptic number.

It is an amenable number.

11938889173 is a deficient number, since it is larger than the sum of its proper divisors (1).

11938889173 is an equidigital number, since it uses as much as digits as its factorization.

11938889173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 58.

The spelling of 11938889173 in words is "eleven billion, nine hundred thirty-eight million, eight hundred eighty-nine thousand, one hundred seventy-three".