1641334403 has 2 divisors, whose sum is σ = 1641334404. Its totient is φ = 1641334402.

The previous prime is 1641334397. The next prime is 1641334421. The reversal of 1641334403 is 3044331461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1641334403 - 2⁸ = 1641334147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1641334433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820667201 + 820667202.

It is an arithmetic number, because the mean of its divisors is an integer number (820667202).

Almost surely, 2^1641334403 is an apocalyptic number.

1641334403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641334403 is an equidigital number, since it uses as much as digits as its factorization.

1641334403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 1641334403 is about 40513.3854793697. The cubic root of 1641334403 is about 1179.5934640444.

Adding to 1641334403 its reverse (3044331461), we get a palindrome (4685665864).

The spelling of 1641334403 in words is "one billion, six hundred forty-one million, three hundred thirty-four thousand, four hundred three".