1980485 has 8 divisors (see below), whose sum is σ = 2559480. Its totient is φ = 1462464.

The previous prime is 1980469. The next prime is 1980491. The reversal of 1980485 is 5840891.

It can be written as a sum of positive squares in 4 ways, for example, as 37249 + 1943236 = 193^2 + 1394^2 .

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 1980485 - 2⁴ = 1980469 is a prime.

It is a congruent number.

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, 15170 + ... + 15299.

It is an arithmetic number, because the mean of its divisors is an integer number (319935).

2^1980485 is an apocalyptic number.

It is an amenable number.

1980485 is a deficient number, since it is larger than the sum of its proper divisors (578995).

1980485 is a wasteful number, since it uses less digits than its factorization.

1980485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30487.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1980485 is about 1407.2970546406. The cubic root of 1980485 is about 125.5809755558.

The spelling of 1980485 in words is "one million, nine hundred eighty thousand, four hundred eighty-five".