1109942819 has 2 divisors, whose sum is σ = 1109942820. Its totient is φ = 1109942818.

The previous prime is 1109942753. The next prime is 1109942831. The reversal of 1109942819 is 9182499011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1109942819 - 2²⁰ = 1108894243 is a prime.

It is a super-2 number, since 2×1109942819² = 2463946122899333522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1109942819.

It is not a weakly prime, because it can be changed into another prime (1109942419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554971409 + 554971410.

It is an arithmetic number, because the mean of its divisors is an integer number (554971410).

Almost surely, 2^1109942819 is an apocalyptic number.

1109942819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109942819 is an equidigital number, since it uses as much as digits as its factorization.

1109942819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 44.

The square root of 1109942819 is about 33315.8043426840. The cubic root of 1109942819 is about 1035.3810258221.

The spelling of 1109942819 in words is "one billion, one hundred nine million, nine hundred forty-two thousand, eight hundred nineteen".