1993842 has 16 divisors (see below), whose sum is σ = 4430880. Its totient is φ = 664596.

The previous prime is 1993829. The next prime is 1993861. The reversal of 1993842 is 2483991.

It is a junction number, because it is equal to n+sod(n) for n = 1993797 and 1993806.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18408 + ... + 18515.

It is an arithmetic number, because the mean of its divisors is an integer number (276930).

2^1993842 is an apocalyptic number.

1993842 is an abundant number, since it is smaller than the sum of its proper divisors (2437038).

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

1993842 is a wasteful number, since it uses less digits than its factorization.

1993842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36934 (or 36928 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 1993842 is about 1412.0347021231. The cubic root of 1993842 is about 125.8626621499.

The spelling of 1993842 in words is "one million, nine hundred ninety-three thousand, eight hundred forty-two".