1040203993 has 2 divisors, whose sum is σ = 1040203994. Its totient is φ = 1040203992.

The previous prime is 1040203979. The next prime is 1040204017. The reversal of 1040203993 is 3993020401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 880130889 + 160073104 = 29667^2 + 12652^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040203993 - 2¹³ = 1040195801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1040203093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520101996 + 520101997.

It is an arithmetic number, because the mean of its divisors is an integer number (520101997).

Almost surely, 2^1040203993 is an apocalyptic number.

It is an amenable number.

1040203993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040203993 is an equidigital number, since it uses as much as digits as its factorization.

1040203993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 1040203993 is about 32252.1936153186. The cubic root of 1040203993 is about 1013.2256422544.

The spelling of 1040203993 in words is "one billion, forty million, two hundred three thousand, nine hundred ninety-three".