1102005643 has 4 divisors (see below), whose sum is σ = 1160005960. Its totient is φ = 1044005328.

The previous prime is 1102005631. The next prime is 1102005659. The reversal of 1102005643 is 3465002011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3465002011 = 37 ⋅93648703.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1102005643 is a prime.

It is a Duffinian number.

1102005643 is a modest number, since divided by 5643 gives 1102 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1102005613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29000130 + ... + 29000167.

It is an arithmetic number, because the mean of its divisors is an integer number (290001490).

Almost surely, 2^1102005643 is an apocalyptic number.

1102005643 is a deficient number, since it is larger than the sum of its proper divisors (58000317).

1102005643 is an equidigital number, since it uses as much as digits as its factorization.

1102005643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58000316.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1102005643 is about 33196.4703394804. The cubic root of 1102005643 is about 1032.9071240446.

Adding to 1102005643 its reverse (3465002011), we get a palindrome (4567007654).

The spelling of 1102005643 in words is "one billion, one hundred two million, five thousand, six hundred forty-three".