1889000027 has 2 divisors, whose sum is σ = 1889000028. Its totient is φ = 1889000026.

The previous prime is 1888999997. The next prime is 1889000039. The reversal of 1889000027 is 7200009881.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1889000027 is a prime.

It is a super-2 number, since 2×1889000027² = 7136642204012001458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1889020027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944500013 + 944500014.

It is an arithmetic number, because the mean of its divisors is an integer number (944500014).

Almost surely, 2^1889000027 is an apocalyptic number.

1889000027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1889000027 is an equidigital number, since it uses as much as digits as its factorization.

1889000027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1889000027 is about 43462.6279348131. The cubic root of 1889000027 is about 1236.1674999395.

The spelling of 1889000027 in words is "one billion, eight hundred eighty-nine million, twenty-seven", and thus it is an aban number.