1999027027 has 2 divisors, whose sum is σ = 1999027028. Its totient is φ = 1999027026.

The previous prime is 1999027021. The next prime is 1999027049. The reversal of 1999027027 is 7207209991.

It is a weak prime.

It is an emirp because it is prime and its reverse (7207209991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1999027027 is a prime.

It is a super-2 number, since 2×1999027027² = 7992218109352917458, which contains 22 as substring.

1999027027 is a modest number, since divided by 27027 gives 1999 as remainder.

It is not a weakly prime, because it can be changed into another prime (1999027021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999513513 + 999513514.

It is an arithmetic number, because the mean of its divisors is an integer number (999513514).

Almost surely, 2^1999027027 is an apocalyptic number.

1999027027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1999027027 is an equidigital number, since it uses as much as digits as its factorization.

1999027027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 1999027027 is about 44710.4800578119. The cubic root of 1999027027 is about 1259.7167052270.

The spelling of 1999027027 in words is "one billion, nine hundred ninety-nine million, twenty-seven thousand, twenty-seven".