20144230181 has 2 divisors, whose sum is σ = 20144230182. Its totient is φ = 20144230180.

The previous prime is 20144230163. The next prime is 20144230213. The reversal of 20144230181 is 18103244102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15101952100 + 5042278081 = 122890^2 + 71009^2 .

It is a cyclic number.

It is not a de Polignac number, because 20144230181 - 2¹⁸ = 20143968037 is a prime.

It is a super-2 number, since 2×20144230181² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20144230181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20144230151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10072115090 + 10072115091.

It is an arithmetic number, because the mean of its divisors is an integer number (10072115091).

Almost surely, 2^20144230181 is an apocalyptic number.

It is an amenable number.

20144230181 is a deficient number, since it is larger than the sum of its proper divisors (1).

20144230181 is an equidigital number, since it uses as much as digits as its factorization.

20144230181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 20144230181 its reverse (18103244102), we get a palindrome (38247474283).

The spelling of 20144230181 in words is "twenty billion, one hundred forty-four million, two hundred thirty thousand, one hundred eighty-one".