1992985 has 8 divisors (see below), whose sum is σ = 2404800. Its totient is φ = 1585584.

The previous prime is 1992983. The next prime is 1993031. The reversal of 1992985 is 5892991.

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

It is a cyclic number.

It is not a de Polignac number, because 1992985 - 2¹ = 1992983 is a prime.

It is a d-powerful number, because it can be written as 1 + 9 + 9 + 2¹⁵ + 9⁴ + 8³ + 5⁹ .

It is not an unprimeable number, because it can be changed into a prime (1992983) 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 7 ways as a sum of consecutive naturals, for example, 7 + ... + 1996.

It is an arithmetic number, because the mean of its divisors is an integer number (300600).

2^1992985 is an apocalyptic number.

It is an amenable number.

1992985 is a deficient number, since it is larger than the sum of its proper divisors (411815).

1992985 is a wasteful number, since it uses less digits than its factorization.

1992985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207.

The product of its digits is 58320, while the sum is 43.

The square root of 1992985 is about 1411.7312067104. The cubic root of 1992985 is about 125.8446266587.

The spelling of 1992985 in words is "one million, nine hundred ninety-two thousand, nine hundred eighty-five".