1001000027 has 2 divisors, whose sum is σ = 1001000028. Its totient is φ = 1001000026.

The previous prime is 1000999949. The next prime is 1001000051. The reversal of 1001000027 is 7200001001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001000027 - 2⁸ = 1000999771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000999981 and 1001000017.

It is not a weakly prime, because it can be changed into another prime (1001050027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500500013 + 500500014.

It is an arithmetic number, because the mean of its divisors is an integer number (500500014).

Almost surely, 2^1001000027 is an apocalyptic number.

1001000027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001000027 is an equidigital number, since it uses as much as digits as its factorization.

1001000027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14, while the sum is 11.

The square root of 1001000027 is about 31638.5844658069. The cubic root of 1001000027 is about 1000.3332312779. Note that the first 3 decimals are identical.

Adding to 1001000027 its reverse (7200001001), we get a palindrome (8201001028).

The spelling of 1001000027 in words is "one billion, one million, twenty-seven", and thus it is an aban number and an uban number.