1002689473 has 2 divisors, whose sum is σ = 1002689474. Its totient is φ = 1002689472.

The previous prime is 1002689459. The next prime is 1002689491. The reversal of 1002689473 is 3749862001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 626601024 + 376088449 = 25032^2 + 19393^2 .

It is an emirp because it is prime and its reverse (3749862001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002689473 - 2⁹ = 1002688961 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002689423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501344736 + 501344737.

It is an arithmetic number, because the mean of its divisors is an integer number (501344737).

Almost surely, 2^1002689473 is an apocalyptic number.

It is an amenable number.

1002689473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002689473 is an equidigital number, since it uses as much as digits as its factorization.

1002689473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1002689473 is about 31665.2723500051. The cubic root of 1002689473 is about 1000.8956885026.

It can be divided in two parts, 10026 and 89473, that added together give a palindrome (99499).

The spelling of 1002689473 in words is "one billion, two million, six hundred eighty-nine thousand, four hundred seventy-three".