1481789 has 4 divisors (see below), whose sum is σ = 1486524. Its totient is φ = 1477056.

The previous prime is 1481783. The next prime is 1481797. The reversal of 1481789 is 9871841.

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

It can be written as a sum of positive squares in 2 ways, for example, as 550564 + 931225 = 742^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 1481789 - 2⁴ = 1481773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1481783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1862 + ... + 2535.

It is an arithmetic number, because the mean of its divisors is an integer number (371631).

2^1481789 is an apocalyptic number.

It is an amenable number.

1481789 is a deficient number, since it is larger than the sum of its proper divisors (4735).

1481789 is an equidigital number, since it uses as much as digits as its factorization.

1481789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4734.

The product of its digits is 16128, while the sum is 38.

The square root of 1481789 is about 1217.2875584676. The cubic root of 1481789 is about 114.0062836385.

The spelling of 1481789 in words is "one million, four hundred eighty-one thousand, seven hundred eighty-nine".