1026421793 has 2 divisors, whose sum is σ = 1026421794. Its totient is φ = 1026421792.

The previous prime is 1026421787. The next prime is 1026421817. The reversal of 1026421793 is 3971246201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 927080704 + 99341089 = 30448^2 + 9967^2 .

It is a cyclic number.

It is not a de Polignac number, because 1026421793 - 2⁴ = 1026421777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1026421703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513210896 + 513210897.

It is an arithmetic number, because the mean of its divisors is an integer number (513210897).

Almost surely, 2^1026421793 is an apocalyptic number.

It is an amenable number.

1026421793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026421793 is an equidigital number, since it uses as much as digits as its factorization.

1026421793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 1026421793 is about 32037.8181685333. The cubic root of 1026421793 is about 1008.7308153549.

Adding to 1026421793 its reverse (3971246201), we get a palindrome (4997667994).

The spelling of 1026421793 in words is "one billion, twenty-six million, four hundred twenty-one thousand, seven hundred ninety-three".