1980835 has 8 divisors (see below), whose sum is σ = 2390256. Its totient is φ = 1575840.

The previous prime is 1980821. The next prime is 1980859. The reversal of 1980835 is 5380891.

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

It is not a de Polignac number, because 1980835 - 2⁷ = 1980707 is a prime.

It is a Duffinian number.

1980835 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1980835.

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, 21 + ... + 1990.

It is an arithmetic number, because the mean of its divisors is an integer number (298782).

2^1980835 is an apocalyptic number.

1980835 is a deficient number, since it is larger than the sum of its proper divisors (409421).

1980835 is a wasteful number, since it uses less digits than its factorization.

1980835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1980835 is about 1407.4214010026. The cubic root of 1980835 is about 125.5883728604.

The spelling of 1980835 in words is "one million, nine hundred eighty thousand, eight hundred thirty-five".