1043920013 has 2 divisors, whose sum is σ = 1043920014. Its totient is φ = 1043920012.

The previous prime is 1043920001. The next prime is 1043920019. The reversal of 1043920013 is 3100293401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 541353289 + 502566724 = 23267^2 + 22418^2 .

It is a cyclic number.

It is not a de Polignac number, because 1043920013 - 2¹⁰ = 1043918989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1043920019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521960006 + 521960007.

It is an arithmetic number, because the mean of its divisors is an integer number (521960007).

Almost surely, 2^1043920013 is an apocalyptic number.

It is an amenable number.

1043920013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043920013 is an equidigital number, since it uses as much as digits as its factorization.

1043920013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1043920013 is about 32309.7510513467. The cubic root of 1043920013 is about 1014.4307558984.

The spelling of 1043920013 in words is "one billion, forty-three million, nine hundred twenty thousand, thirteen".