1109191829 has 2 divisors, whose sum is σ = 1109191830. Its totient is φ = 1109191828.

The previous prime is 1109191793. The next prime is 1109191849. The reversal of 1109191829 is 9281919011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 894129604 + 215062225 = 29902^2 + 14665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1109191829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1109191849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554595914 + 554595915.

It is an arithmetic number, because the mean of its divisors is an integer number (554595915).

Almost surely, 2^1109191829 is an apocalyptic number.

It is an amenable number.

1109191829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109191829 is an equidigital number, since it uses as much as digits as its factorization.

1109191829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 41.

The square root of 1109191829 is about 33304.5316586197. The cubic root of 1109191829 is about 1035.1474593669.

The spelling of 1109191829 in words is "one billion, one hundred nine million, one hundred ninety-one thousand, eight hundred twenty-nine".