1038891769 has 2 divisors, whose sum is σ = 1038891770. Its totient is φ = 1038891768.

The previous prime is 1038891703. The next prime is 1038891781. The reversal of 1038891769 is 9671988301.

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., 596336400 + 442555369 = 24420^2 + 21037^2 .

It is a cyclic number.

It is not a de Polignac number, because 1038891769 - 2⁹ = 1038891257 is a prime.

It is a super-2 number, since 2×1038891769² = 2158592215391898722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1038891869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519445884 + 519445885.

It is an arithmetic number, because the mean of its divisors is an integer number (519445885).

Almost surely, 2^1038891769 is an apocalyptic number.

It is an amenable number.

1038891769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1038891769 is an equidigital number, since it uses as much as digits as its factorization.

1038891769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 1038891769 is about 32231.8440210919. The cubic root of 1038891769 is about 1012.7993994222.

The spelling of 1038891769 in words is "one billion, thirty-eight million, eight hundred ninety-one thousand, seven hundred sixty-nine".