1993505 has 16 divisors (see below), whose sum is σ = 2592000. Its totient is φ = 1466112.

The previous prime is 1993493. The next prime is 1993507. The reversal of 1993505 is 5053991.

It is a cyclic number.

It is not a de Polignac number, because 1993505 - 2⁶ = 1993441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3746 + ... + 4244.

It is an arithmetic number, because the mean of its divisors is an integer number (162000).

2^1993505 is an apocalyptic number.

It is an amenable number.

1993505 is a deficient number, since it is larger than the sum of its proper divisors (598495).

1993505 is a wasteful number, since it uses less digits than its factorization.

1993505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 1993505 is about 1411.9153657355. The cubic root of 1993505 is about 125.8555706306.

The spelling of 1993505 in words is "one million, nine hundred ninety-three thousand, five hundred five".