1002509987 has 2 divisors, whose sum is σ = 1002509988. Its totient is φ = 1002509986.

The previous prime is 1002509971. The next prime is 1002510031. The reversal of 1002509987 is 7899052001.

1002509987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002509987 - 2⁴ = 1002509971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002509957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501254993 + 501254994.

It is an arithmetic number, because the mean of its divisors is an integer number (501254994).

Almost surely, 2^1002509987 is an apocalyptic number.

1002509987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002509987 is an equidigital number, since it uses as much as digits as its factorization.

1002509987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 1002509987 is about 31662.4381089012. The cubic root of 1002509987 is about 1000.8359633040.

The spelling of 1002509987 in words is "one billion, two million, five hundred nine thousand, nine hundred eighty-seven".