17930958964549 has 2 divisors, whose sum is σ = 17930958964550. Its totient is φ = 17930958964548.

The previous prime is 17930958964507. The next prime is 17930958964603. The reversal of 17930958964549 is 94546985903971.

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., 17708467508449 + 222491456100 = 4208143^2 + 471690^2 .

It is an emirp because it is prime and its reverse (94546985903971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17930958964549 - 2¹³ = 17930958956357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17930958934549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8965479482274 + 8965479482275.

It is an arithmetic number, because the mean of its divisors is an integer number (8965479482275).

Almost surely, 2^{17930958964549} is an apocalyptic number.

It is an amenable number.

17930958964549 is a deficient number, since it is larger than the sum of its proper divisors (1).

17930958964549 is an equidigital number, since it uses as much as digits as its factorization.

17930958964549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2645395200, while the sum is 79.

The spelling of 17930958964549 in words is "seventeen trillion, nine hundred thirty billion, nine hundred fifty-eight million, nine hundred sixty-four thousand, five hundred forty-nine".