1980574 has 4 divisors (see below), whose sum is σ = 2970864. Its totient is φ = 990286.

The previous prime is 1980529. The next prime is 1980577. The reversal of 1980574 is 4750891.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495142 + ... + 495145.

It is an arithmetic number, because the mean of its divisors is an integer number (742716).

2^1980574 is an apocalyptic number.

1980574 is a deficient number, since it is larger than the sum of its proper divisors (990290).

1980574 is an equidigital number, since it uses as much as digits as its factorization.

1980574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990289.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 1980574 is about 1407.3286751857. The cubic root of 1980574 is about 125.5828566673.

The spelling of 1980574 in words is "one million, nine hundred eighty thousand, five hundred seventy-four".