1089000001 has 2 divisors, whose sum is σ = 1089000002. Its totient is φ = 1089000000.

The previous prime is 1088999969. The next prime is 1089000013. The reversal of 1089000001 is 1000009801.

It is a Cunningham number, because it is equal to 33000²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1089000000 + 1 = 33000^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 1089000001 - 2⁵ = 1088999969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1089000091) 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, 544500000 + 544500001.

It is an arithmetic number, because the mean of its divisors is an integer number (544500001).

Almost surely, 2^1089000001 is an apocalyptic number.

It is an amenable number.

1089000001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089000001 is an equidigital number, since it uses as much as digits as its factorization.

1089000001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1089000001 is about 33000.0000151515. Note that the first 4 decimals coincide. The cubic root of 1089000001 is about 1028.8276481251.

Adding to 1089000001 its reverse (1000009801), we get a palindrome (2089009802).

The spelling of 1089000001 in words is "one billion, eighty-nine million, one", and thus it is an aban number and an uban number.