1002812089 has 2 divisors, whose sum is σ = 1002812090. Its totient is φ = 1002812088.

The previous prime is 1002812053. The next prime is 1002812113. The reversal of 1002812089 is 9802182001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 875686464 + 127125625 = 29592^2 + 11275^2 .

It is an emirp because it is prime and its reverse (9802182001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002812089 - 2²⁷ = 868594361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002812089.

It is not a weakly prime, because it can be changed into another prime (1002812389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501406044 + 501406045.

It is an arithmetic number, because the mean of its divisors is an integer number (501406045).

Almost surely, 2^1002812089 is an apocalyptic number.

It is an amenable number.

1002812089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002812089 is an equidigital number, since it uses as much as digits as its factorization.

1002812089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 1002812089 is about 31667.2084181729. The cubic root of 1002812089 is about 1000.9364857207.

The spelling of 1002812089 in words is "one billion, two million, eight hundred twelve thousand, eighty-nine".