1641305429 has 2 divisors, whose sum is σ = 1641305430. Its totient is φ = 1641305428.

The previous prime is 1641305423. The next prime is 1641305441. The reversal of 1641305429 is 9245031461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1253018404 + 388287025 = 35398^2 + 19705^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641305429 - 2²⁸ = 1372869973 is a prime.

It is a super-2 number, since 2×1641305429² = 5387767022529748082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641305423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820652714 + 820652715.

It is an arithmetic number, because the mean of its divisors is an integer number (820652715).

Almost surely, 2^1641305429 is an apocalyptic number.

It is an amenable number.

1641305429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641305429 is an equidigital number, since it uses as much as digits as its factorization.

1641305429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1641305429 is about 40513.0278922719. The cubic root of 1641305429 is about 1179.5865229965.

The spelling of 1641305429 in words is "one billion, six hundred forty-one million, three hundred five thousand, four hundred twenty-nine".