29143198181 has 2 divisors, whose sum is σ = 29143198182. Its totient is φ = 29143198180.

The previous prime is 29143198171. The next prime is 29143198187. The reversal of 29143198181 is 18189134192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29014012225 + 129185956 = 170335^2 + 11366^2 .

It is a cyclic number.

It is not a de Polignac number, because 29143198181 - 2¹⁸ = 29142936037 is a prime.

It is a super-2 number, since 2×29143198181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29143198187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14571599090 + 14571599091.

It is an arithmetic number, because the mean of its divisors is an integer number (14571599091).

Almost surely, 2^29143198181 is an apocalyptic number.

It is an amenable number.

29143198181 is a deficient number, since it is larger than the sum of its proper divisors (1).

29143198181 is an equidigital number, since it uses as much as digits as its factorization.

29143198181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 47.

The spelling of 29143198181 in words is "twenty-nine billion, one hundred forty-three million, one hundred ninety-eight thousand, one hundred eighty-one".