30538106173 has 2 divisors, whose sum is σ = 30538106174. Its totient is φ = 30538106172.

The previous prime is 30538106149. The next prime is 30538106257. The reversal of 30538106173 is 37160183503.

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., 20585649529 + 9952456644 = 143477^2 + 99762^2 .

It is a cyclic number.

It is not a de Polignac number, because 30538106173 - 2¹³ = 30538097981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30538106113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15269053086 + 15269053087.

It is an arithmetic number, because the mean of its divisors is an integer number (15269053087).

Almost surely, 2^30538106173 is an apocalyptic number.

It is an amenable number.

30538106173 is a deficient number, since it is larger than the sum of its proper divisors (1).

30538106173 is an equidigital number, since it uses as much as digits as its factorization.

30538106173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

Adding to 30538106173 its reverse (37160183503), we get a palindrome (67698289676).

The spelling of 30538106173 in words is "thirty billion, five hundred thirty-eight million, one hundred six thousand, one hundred seventy-three".