1641365203 has 2 divisors, whose sum is σ = 1641365204. Its totient is φ = 1641365202.

The previous prime is 1641365189. The next prime is 1641365213. The reversal of 1641365203 is 3025631461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1641365203 - 2²⁹ = 1104494291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1641365213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820682601 + 820682602.

It is an arithmetic number, because the mean of its divisors is an integer number (820682602).

Almost surely, 2^1641365203 is an apocalyptic number.

1641365203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641365203 is an equidigital number, since it uses as much as digits as its factorization.

1641365203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1641365203 is about 40513.7655988678. The cubic root of 1641365203 is about 1179.6008424416.

Adding to 1641365203 its reverse (3025631461), we get a palindrome (4666996664).

The spelling of 1641365203 in words is "one billion, six hundred forty-one million, three hundred sixty-five thousand, two hundred three".