1038643 has 2 divisors, whose sum is σ = 1038644. Its totient is φ = 1038642.

The previous prime is 1038637. The next prime is 1038671. The reversal of 1038643 is 3468301.

It is a weak prime.

It is an emirp because it is prime and its reverse (3468301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1038643 - 2¹³ = 1030451 is a prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (1038623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519321 + 519322.

It is an arithmetic number, because the mean of its divisors is an integer number (519322).

2^1038643 is an apocalyptic number.

1038643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1038643 is an equidigital number, since it uses as much as digits as its factorization.

1038643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1038643 is about 1019.1383615584. The cubic root of 1038643 is about 101.2718552628.

It can be divided in two parts, 1038 and 643, that added together give a square (1681 = 41²).

The spelling of 1038643 in words is "one million, thirty-eight thousand, six hundred forty-three".