1993086 has 28 divisors (see below), whose sum is σ = 4485672. Its totient is φ = 663876.

The previous prime is 1993067. The next prime is 1993087. The reversal of 1993086 is 6803991.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1993086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993087) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 775 + ... + 2141.

2^1993086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1993086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2242836).

1993086 is an abundant number, since it is smaller than the sum of its proper divisors (2492586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1993086 is an equidigital number, since it uses as much as digits as its factorization.

1993086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387 (or 1372 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1993086 is about 1411.7669779393. The cubic root of 1993086 is about 125.8467524637.

The spelling of 1993086 in words is "one million, nine hundred ninety-three thousand, eighty-six".