1038742889 has 2 divisors, whose sum is σ = 1038742890. Its totient is φ = 1038742888.

The previous prime is 1038742879. The next prime is 1038742897. The reversal of 1038742889 is 9882478301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1036324864 + 2418025 = 32192^2 + 1555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1038742889 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1038742829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519371444 + 519371445.

It is an arithmetic number, because the mean of its divisors is an integer number (519371445).

Almost surely, 2^1038742889 is an apocalyptic number.

It is an amenable number.

1038742889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1038742889 is an equidigital number, since it uses as much as digits as its factorization.

1038742889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 1038742889 is about 32229.5344210865. The cubic root of 1038742889 is about 1012.7510168468.

The spelling of 1038742889 in words is "one billion, thirty-eight million, seven hundred forty-two thousand, eight hundred eighty-nine".