1020038989 has 2 divisors, whose sum is σ = 1020038990. Its totient is φ = 1020038988.

The previous prime is 1020038969. The next prime is 1020038993. The reversal of 1020038989 is 9898300201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1019524900 + 514089 = 31930^2 + 717^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020038989 - 2⁷ = 1020038861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020038939) 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, 510019494 + 510019495.

It is an arithmetic number, because the mean of its divisors is an integer number (510019495).

Almost surely, 2^1020038989 is an apocalyptic number.

It is an amenable number.

1020038989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020038989 is an equidigital number, since it uses as much as digits as its factorization.

1020038989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1020038989 is about 31938.0492359818. The cubic root of 1020038989 is about 1006.6355352832.

The spelling of 1020038989 in words is "one billion, twenty million, thirty-eight thousand, nine hundred eighty-nine".