1993087 has 2 divisors, whose sum is σ = 1993088. Its totient is φ = 1993086.

The previous prime is 1993067. The next prime is 1993109. The reversal of 1993087 is 7803991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1993087 - 2¹⁹ = 1468799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1993037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996543 + 996544.

It is an arithmetic number, because the mean of its divisors is an integer number (996544).

2^1993087 is an apocalyptic number.

1993087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993087 is an equidigital number, since it uses as much as digits as its factorization.

1993087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1993087 is about 1411.7673321054. The cubic root of 1993087 is about 125.8467735109.

The spelling of 1993087 in words is "one million, nine hundred ninety-three thousand, eighty-seven".