1043116643 has 2 divisors, whose sum is σ = 1043116644. Its totient is φ = 1043116642.

The previous prime is 1043116639. The next prime is 1043116721. The reversal of 1043116643 is 3466113401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1043116643 - 2² = 1043116639 is a prime.

It is not a weakly prime, because it can be changed into another prime (1043116603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521558321 + 521558322.

It is an arithmetic number, because the mean of its divisors is an integer number (521558322).

Almost surely, 2^1043116643 is an apocalyptic number.

1043116643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043116643 is an equidigital number, since it uses as much as digits as its factorization.

1043116643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1043116643 is about 32297.3163436221. The cubic root of 1043116643 is about 1014.1704638029.

The spelling of 1043116643 in words is "one billion, forty-three million, one hundred sixteen thousand, six hundred forty-three".