1648440007 has 4 divisors (see below), whose sum is σ = 1648856016. Its totient is φ = 1648024000.

The previous prime is 1648439983. The next prime is 1648440041. The reversal of 1648440007 is 7000448461.

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

It is a cyclic number.

It is not a de Polignac number, because 1648440007 - 2⁷ = 1648439879 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 (1648440047) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 202003 + ... + 210004.

It is an arithmetic number, because the mean of its divisors is an integer number (412214004).

Almost surely, 2^1648440007 is an apocalyptic number.

1648440007 is a deficient number, since it is larger than the sum of its proper divisors (416009).

1648440007 is an equidigital number, since it uses as much as digits as its factorization.

1648440007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416008.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 1648440007 is about 40600.9852959260. The cubic root of 1648440007 is about 1181.2932309626.

Adding to 1648440007 its reverse (7000448461), we get a palindrome (8648888468).

The spelling of 1648440007 in words is "one billion, six hundred forty-eight million, four hundred forty thousand, seven".