1103664409 has 2 divisors, whose sum is σ = 1103664410. Its totient is φ = 1103664408.

The previous prime is 1103664391. The next prime is 1103664413. The reversal of 1103664409 is 9044663011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1035552400 + 68112009 = 32180^2 + 8253^2 .

It is an emirp because it is prime and its reverse (9044663011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1103664409 - 2⁵ = 1103664377 is a prime.

It is not a weakly prime, because it can be changed into another prime (1103664479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551832204 + 551832205.

It is an arithmetic number, because the mean of its divisors is an integer number (551832205).

Almost surely, 2^1103664409 is an apocalyptic number.

It is an amenable number.

1103664409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103664409 is an equidigital number, since it uses as much as digits as its factorization.

1103664409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1103664409 is about 33221.4450167358. The cubic root of 1103664409 is about 1033.4251166363.

The spelling of 1103664409 in words is "one billion, one hundred three million, six hundred sixty-four thousand, four hundred nine".