1640360011 has 2 divisors, whose sum is σ = 1640360012. Its totient is φ = 1640360010.

The previous prime is 1640359999. The next prime is 1640360053. The reversal of 1640360011 is 1100630461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1640360011 - 2⁷ = 1640359883 is a prime.

It is not a weakly prime, because it can be changed into another prime (1640360081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820180005 + 820180006.

It is an arithmetic number, because the mean of its divisors is an integer number (820180006).

Almost surely, 2^1640360011 is an apocalyptic number.

1640360011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640360011 is an equidigital number, since it uses as much as digits as its factorization.

1640360011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1640360011 is about 40501.3581377218. The cubic root of 1640360011 is about 1179.3599926374.

Adding to 1640360011 its reverse (1100630461), we get a palindrome (2740990472).

The spelling of 1640360011 in words is "one billion, six hundred forty million, three hundred sixty thousand, eleven".