18848544101 has 2 divisors, whose sum is σ = 18848544102. Its totient is φ = 18848544100.

The previous prime is 18848544083. The next prime is 18848544157. The reversal of 18848544101 is 10144584881.

It is a Cunningham number, because it is equal to 137290²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18848544100 + 1 = 137290^2 + 1^2 .

It is an emirp because it is prime and its reverse (10144584881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18848544101 - 2¹⁸ = 18848281957 is a prime.

It is a super-2 number, since 2×18848544101² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18848543101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9424272050 + 9424272051.

It is an arithmetic number, because the mean of its divisors is an integer number (9424272051).

Almost surely, 2^18848544101 is an apocalyptic number.

It is an amenable number.

18848544101 is a deficient number, since it is larger than the sum of its proper divisors (1).

18848544101 is an equidigital number, since it uses as much as digits as its factorization.

18848544101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163840, while the sum is 44.

The spelling of 18848544101 in words is "eighteen billion, eight hundred forty-eight million, five hundred forty-four thousand, one hundred one".