1030019989 has 2 divisors, whose sum is σ = 1030019990. Its totient is φ = 1030019988.

The previous prime is 1030019951. The next prime is 1030020007. The reversal of 1030019989 is 9899100301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 958955089 + 71064900 = 30967^2 + 8430^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030019989 - 2¹¹ = 1030017941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1030019909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515009994 + 515009995.

It is an arithmetic number, because the mean of its divisors is an integer number (515009995).

Almost surely, 2^1030019989 is an apocalyptic number.

It is an amenable number.

1030019989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030019989 is an equidigital number, since it uses as much as digits as its factorization.

1030019989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 1030019989 is about 32093.9244873543. The cubic root of 1030019989 is about 1009.9081669927.

The spelling of 1030019989 in words is "one billion, thirty million, nineteen thousand, nine hundred eighty-nine".