1648572685 has 16 divisors (see below), whose sum is σ = 2019012480. Its totient is φ = 1291792320.

The previous prime is 1648572623. The next prime is 1648572713. The reversal of 1648572685 is 5862758461.

It is a happy number.

It is not a de Polignac number, because 1648572685 - 2⁷ = 1648572557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162286 + ... + 172144.

It is an arithmetic number, because the mean of its divisors is an integer number (126188280).

Almost surely, 2^1648572685 is an apocalyptic number.

It is an amenable number.

1648572685 is a deficient number, since it is larger than the sum of its proper divisors (370439795).

1648572685 is an equidigital number, since it uses as much as digits as its factorization.

1648572685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10548.

The product of its digits is 3225600, while the sum is 52.

The square root of 1648572685 is about 40602.6191889144. The cubic root of 1648572685 is about 1181.3249230307.

The spelling of 1648572685 in words is "one billion, six hundred forty-eight million, five hundred seventy-two thousand, six hundred eighty-five".