18879572573 has 2 divisors, whose sum is σ = 18879572574. Its totient is φ = 18879572572.

The previous prime is 18879572501. The next prime is 18879572587. The reversal of 18879572573 is 37527597881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17551480324 + 1328092249 = 132482^2 + 36443^2 .

It is an emirp because it is prime and its reverse (37527597881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18879572573 - 2⁸ = 18879572317 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18879572473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9439786286 + 9439786287.

It is an arithmetic number, because the mean of its divisors is an integer number (9439786287).

Almost surely, 2^18879572573 is an apocalyptic number.

It is an amenable number.

18879572573 is a deficient number, since it is larger than the sum of its proper divisors (1).

18879572573 is an equidigital number, since it uses as much as digits as its factorization.

18879572573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29635200, while the sum is 62.

The spelling of 18879572573 in words is "eighteen billion, eight hundred seventy-nine million, five hundred seventy-two thousand, five hundred seventy-three".