1641040267 has 2 divisors, whose sum is σ = 1641040268. Its totient is φ = 1641040266.

The previous prime is 1641040237. The next prime is 1641040309. The reversal of 1641040267 is 7620401461.

It is a weak prime.

It is an emirp because it is prime and its reverse (7620401461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1641040267 - 2¹¹ = 1641038219 is a prime.

It is not a weakly prime, because it can be changed into another prime (1641040237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820520133 + 820520134.

It is an arithmetic number, because the mean of its divisors is an integer number (820520134).

Almost surely, 2^1641040267 is an apocalyptic number.

1641040267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641040267 is an equidigital number, since it uses as much as digits as its factorization.

1641040267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1641040267 is about 40509.7552078509. The cubic root of 1641040267 is about 1179.5229966591.

The spelling of 1641040267 in words is "one billion, six hundred forty-one million, forty thousand, two hundred sixty-seven".