1485800405 has 4 divisors (see below), whose sum is σ = 1782960492. Its totient is φ = 1188640320.

The previous prime is 1485800401. The next prime is 1485800411. The reversal of 1485800405 is 5040085841.

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 784504081 + 701296324 = 28009^2 + 26482^2 .

It is not a de Polignac number, because 1485800405 - 2² = 1485800401 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 (1485800401) 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, 148580036 + ... + 148580045.

It is an arithmetic number, because the mean of its divisors is an integer number (445740123).

Almost surely, 2^1485800405 is an apocalyptic number.

It is an amenable number.

1485800405 is a deficient number, since it is larger than the sum of its proper divisors (297160087).

1485800405 is an equidigital number, since it uses as much as digits as its factorization.

1485800405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297160086.

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 1485800405 is about 38546.0815777687. The cubic root of 1485800405 is about 1141.0906779892.

The spelling of 1485800405 in words is "one billion, four hundred eighty-five million, eight hundred thousand, four hundred five".