1043565613 has 12 divisors (see below), whose sum is σ = 1065777024. Its totient is φ = 1021798800.

The previous prime is 1043565577. The next prime is 1043565623. The reversal of 1043565613 is 3165653401.

It is not a de Polignac number, because 1043565613 - 2¹³ = 1043557421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043565623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1052548 + ... + 1053538.

It is an arithmetic number, because the mean of its divisors is an integer number (88814752).

Almost surely, 2^1043565613 is an apocalyptic number.

It is an amenable number.

1043565613 is a deficient number, since it is larger than the sum of its proper divisors (22211411).

1043565613 is an frugal number, since it uses more digits than its factorization.

1043565613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396 (or 1335 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 1043565613 is about 32304.2661733710. The cubic root of 1043565613 is about 1014.3159466707.

The spelling of 1043565613 in words is "one billion, forty-three million, five hundred sixty-five thousand, six hundred thirteen".