1109628941 has 2 divisors, whose sum is σ = 1109628942. Its totient is φ = 1109628940.

The previous prime is 1109628929. The next prime is 1109628959. The reversal of 1109628941 is 1498269011.

1109628941 = 23554² + 23555².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 554838025 + 554790916 = 23555^2 + 23554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1109628941 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1109621941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554814470 + 554814471.

It is an arithmetic number, because the mean of its divisors is an integer number (554814471).

Almost surely, 2^1109628941 is an apocalyptic number.

1109628941 is the 23555-th centered square number.

It is an amenable number.

1109628941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109628941 is an equidigital number, since it uses as much as digits as its factorization.

1109628941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 1109628941 is about 33311.0933624221. The cubic root of 1109628941 is about 1035.2834190028.

The spelling of 1109628941 in words is "one billion, one hundred nine million, six hundred twenty-eight thousand, nine hundred forty-one".