1113543209 has 2 divisors, whose sum is σ = 1113543210. Its totient is φ = 1113543208.

The previous prime is 1113543181. The next prime is 1113543251. The reversal of 1113543209 is 9023453111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1047169600 + 66373609 = 32360^2 + 8147^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113543209 - 2¹² = 1113539113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1113548209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556771604 + 556771605.

It is an arithmetic number, because the mean of its divisors is an integer number (556771605).

Almost surely, 2^1113543209 is an apocalyptic number.

It is an amenable number.

1113543209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113543209 is an equidigital number, since it uses as much as digits as its factorization.

1113543209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1113543209 is about 33369.7948600227. The cubic root of 1113543209 is about 1036.4993272949.

The spelling of 1113543209 in words is "one billion, one hundred thirteen million, five hundred forty-three thousand, two hundred nine".