1640963003 has 2 divisors, whose sum is σ = 1640963004. Its totient is φ = 1640963002.

The previous prime is 1640962993. The next prime is 1640963017. The reversal of 1640963003 is 3003690461.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3003690461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1640963003 - 2²⁸ = 1372527547 is a prime.

It is not a weakly prime, because it can be changed into another prime (1640963053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820481501 + 820481502.

It is an arithmetic number, because the mean of its divisors is an integer number (820481502).

Almost surely, 2^1640963003 is an apocalyptic number.

1640963003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640963003 is an equidigital number, since it uses as much as digits as its factorization.

1640963003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 1640963003 is about 40508.8015497867. The cubic root of 1640963003 is about 1179.5044848048.

The spelling of 1640963003 in words is "one billion, six hundred forty million, nine hundred sixty-three thousand, three".