1105603409 has 16 divisors (see below), whose sum is σ = 1142636544. Its totient is φ = 1069362000.

The previous prime is 1105603403. The next prime is 1105603423. The reversal of 1105603409 is 9043065011.

It is a cyclic number.

It is not a de Polignac number, because 1105603409 - 2⁸ = 1105603153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105603403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 959984 + ... + 961134.

It is an arithmetic number, because the mean of its divisors is an integer number (71414784).

Almost surely, 2^1105603409 is an apocalyptic number.

It is an amenable number.

1105603409 is a deficient number, since it is larger than the sum of its proper divisors (37033135).

1105603409 is a wasteful number, since it uses less digits than its factorization.

1105603409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468.

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

The square root of 1105603409 is about 33250.6151672416. The cubic root of 1105603409 is about 1034.0299620184.

The spelling of 1105603409 in words is "one billion, one hundred five million, six hundred three thousand, four hundred nine".