1985345 has 8 divisors (see below), whose sum is σ = 2522664. Its totient is φ = 1494784.

The previous prime is 1985317. The next prime is 1985363. The reversal of 1985345 is 5435891.

It can be written as a sum of positive squares in 4 ways, for example, as 703921 + 1281424 = 839^2 + 1132^2 .

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 1985345 - 2²⁰ = 936769 is a prime.

It is a Curzon number.

It is a plaindrome in base 11.

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, 11594 + ... + 11763.

It is an arithmetic number, because the mean of its divisors is an integer number (315333).

2^1985345 is an apocalyptic number.

It is an amenable number.

1985345 is a deficient number, since it is larger than the sum of its proper divisors (537319).

1985345 is a wasteful number, since it uses less digits than its factorization.

1985345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23379.

The product of its digits is 21600, while the sum is 35.

The square root of 1985345 is about 1409.0227109596. The cubic root of 1985345 is about 125.6836145537.

The spelling of 1985345 in words is "one million, nine hundred eighty-five thousand, three hundred forty-five".