1980473 has 4 divisors (see below), whose sum is σ = 2160528. Its totient is φ = 1800420.

The previous prime is 1980469. The next prime is 1980491. The reversal of 1980473 is 3740891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1980473 - 2² = 1980469 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1980413) 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 3 ways as a sum of consecutive naturals, for example, 90011 + ... + 90032.

It is an arithmetic number, because the mean of its divisors is an integer number (540132).

2^1980473 is an apocalyptic number.

It is an amenable number.

1980473 is a deficient number, since it is larger than the sum of its proper divisors (180055).

1980473 is a wasteful number, since it uses less digits than its factorization.

1980473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180054.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1980473 is about 1407.2927911419. The cubic root of 1980473 is about 125.5807219185.

The spelling of 1980473 in words is "one million, nine hundred eighty thousand, four hundred seventy-three".