18556160941 has 2 divisors, whose sum is σ = 18556160942. Its totient is φ = 18556160940.

The previous prime is 18556160939. The next prime is 18556160983. The reversal of 18556160941 is 14906165581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18556160841 + 100 = 136221^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 18556160941 - 2¹ = 18556160939 is a prime.

It is a super-2 number, since 2×18556160941² (a number of 21 digits) contains 22 as substring.

Together with 18556160939, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 18556160891 and 18556160900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18556160911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9278080470 + 9278080471.

It is an arithmetic number, because the mean of its divisors is an integer number (9278080471).

Almost surely, 2^18556160941 is an apocalyptic number.

It is an amenable number.

18556160941 is a deficient number, since it is larger than the sum of its proper divisors (1).

18556160941 is an equidigital number, since it uses as much as digits as its factorization.

18556160941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 18556160941 in words is "eighteen billion, five hundred fifty-six million, one hundred sixty thousand, nine hundred forty-one".