1641305423 has 2 divisors, whose sum is σ = 1641305424. Its totient is φ = 1641305422.

The previous prime is 1641305387. The next prime is 1641305429. The reversal of 1641305423 is 3245031461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1641305423 - 2¹² = 1641301327 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641305429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820652711 + 820652712.

It is an arithmetic number, because the mean of its divisors is an integer number (820652712).

Almost surely, 2^1641305423 is an apocalyptic number.

1641305423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641305423 is an equidigital number, since it uses as much as digits as its factorization.

1641305423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1641305423 is about 40513.0278182216. The cubic root of 1641305423 is about 1179.5865215591.

Adding to 1641305423 its reverse (3245031461), we get a palindrome (4886336884).

The spelling of 1641305423 in words is "one billion, six hundred forty-one million, three hundred five thousand, four hundred twenty-three".