1109071811 has 2 divisors, whose sum is σ = 1109071812. Its totient is φ = 1109071810.

The previous prime is 1109071801. The next prime is 1109071829. The reversal of 1109071811 is 1181709011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1109071811 - 2²² = 1104877507 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1109071801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554535905 + 554535906.

It is an arithmetic number, because the mean of its divisors is an integer number (554535906).

Almost surely, 2^1109071811 is an apocalyptic number.

1109071811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109071811 is an equidigital number, since it uses as much as digits as its factorization.

1109071811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 29.

The square root of 1109071811 is about 33302.7297830073. The cubic root of 1109071811 is about 1035.1101226304.

The spelling of 1109071811 in words is "one billion, one hundred nine million, seventy-one thousand, eight hundred eleven".