1889087 has 2 divisors, whose sum is σ = 1889088. Its totient is φ = 1889086.

The previous prime is 1889081. The next prime is 1889099. The reversal of 1889087 is 7809881.

It is a weak prime.

It is an emirp because it is prime and its reverse (7809881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1889087 - 2¹⁰ = 1888063 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1889081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944543 + 944544.

It is an arithmetic number, because the mean of its divisors is an integer number (944544).

2^1889087 is an apocalyptic number.

1889087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1889087 is an equidigital number, since it uses as much as digits as its factorization.

1889087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 1889087 is about 1374.4406134861. The cubic root of 1889087 is about 123.6186471449.

The spelling of 1889087 in words is "one million, eight hundred eighty-nine thousand, eighty-seven".