1993902 has 8 divisors (see below), whose sum is σ = 3987816. Its totient is φ = 664632.

The previous prime is 1993877. The next prime is 1993921. The reversal of 1993902 is 2093991.

It is a sphenic number, since it is the product of 3 distinct primes.

1993902 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166153 + ... + 166164.

It is an arithmetic number, because the mean of its divisors is an integer number (498477).

2^1993902 is an apocalyptic number.

1993902 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1993902 is a wasteful number, since it uses less digits than its factorization.

1993902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332322.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 1993902 is about 1412.0559479001. The cubic root of 1993902 is about 125.8639246511.

The spelling of 1993902 in words is "one million, nine hundred ninety-three thousand, nine hundred two".