18142471429 has 2 divisors, whose sum is σ = 18142471430. Its totient is φ = 18142471428.

The previous prime is 18142471381. The next prime is 18142471517. The reversal of 18142471429 is 92417424181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18003467329 + 139004100 = 134177^2 + 11790^2 .

It is a cyclic number.

It is not a de Polignac number, because 18142471429 - 2¹¹ = 18142469381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18142471129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9071235714 + 9071235715.

It is an arithmetic number, because the mean of its divisors is an integer number (9071235715).

Almost surely, 2^18142471429 is an apocalyptic number.

It is an amenable number.

18142471429 is a deficient number, since it is larger than the sum of its proper divisors (1).

18142471429 is an equidigital number, since it uses as much as digits as its factorization.

18142471429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 43.

The spelling of 18142471429 in words is "eighteen billion, one hundred forty-two million, four hundred seventy-one thousand, four hundred twenty-nine".