434140181 has 2 divisors, whose sum is σ = 434140182. Its totient is φ = 434140180.

The previous prime is 434140171. The next prime is 434140199. The reversal of 434140181 is 181041434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 430936081 + 3204100 = 20759^2 + 1790^2 .

It is a cyclic number.

It is not a de Polignac number, because 434140181 - 2¹⁰ = 434139157 is a prime.

It is a super-2 number, since 2×434140181² = 376955393517425522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 434140181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434140171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217070090 + 217070091.

It is an arithmetic number, because the mean of its divisors is an integer number (217070091).

Almost surely, 2^434140181 is an apocalyptic number.

It is an amenable number.

434140181 is a deficient number, since it is larger than the sum of its proper divisors (1).

434140181 is an equidigital number, since it uses as much as digits as its factorization.

434140181 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.

The square root of 434140181 is about 20836.0308360302. The cubic root of 434140181 is about 757.1989347724.

The spelling of 434140181 in words is "four hundred thirty-four million, one hundred forty thousand, one hundred eighty-one".