1648274852649 has 4 divisors (see below), whose sum is σ = 2197699803536. Its totient is φ = 1098849901764.

The previous prime is 1648274852633. The next prime is 1648274852659. The reversal of 1648274852649 is 9462584728461.

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 not a de Polignac number, because 1648274852649 - 2⁴ = 1648274852633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1648274852649.

It is not an unprimeable number, because it can be changed into a prime (1648274852629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274712475439 + ... + 274712475444.

It is an arithmetic number, because the mean of its divisors is an integer number (549424950884).

Almost surely, 2^{1648274852649} is an apocalyptic number.

It is an amenable number.

1648274852649 is a deficient number, since it is larger than the sum of its proper divisors (549424950887).

1648274852649 is an equidigital number, since it uses as much as digits as its factorization.

1648274852649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549424950886.

The product of its digits is 185794560, while the sum is 66.

The spelling of 1648274852649 in words is "one trillion, six hundred forty-eight billion, two hundred seventy-four million, eight hundred fifty-two thousand, six hundred forty-nine".