1000109893 has 2 divisors, whose sum is σ = 1000109894. Its totient is φ = 1000109892.

The previous prime is 1000109849. The next prime is 1000109917. The reversal of 1000109893 is 3989010001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 912462849 + 87647044 = 30207^2 + 9362^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000109893 - 2²⁵ = 966555461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000109833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500054946 + 500054947.

It is an arithmetic number, because the mean of its divisors is an integer number (500054947).

Almost surely, 2^1000109893 is an apocalyptic number.

It is an amenable number.

1000109893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000109893 is an equidigital number, since it uses as much as digits as its factorization.

1000109893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 1000109893 is about 31624.5141148445. The cubic root of 1000109893 is about 1000.0366296583.

Adding to 1000109893 its reverse (3989010001), we get a palindrome (4989119894).

The spelling of 1000109893 in words is "one billion, one hundred nine thousand, eight hundred ninety-three".