1648812233 has 4 divisors (see below), whose sum is σ = 1649054160. Its totient is φ = 1648570308.

The previous prime is 1648812203. The next prime is 1648812259. The reversal of 1648812233 is 3322188461.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 1648812233 - 2⁶ = 1648812169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1648812203) 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, 110435 + ... + 124472.

It is an arithmetic number, because the mean of its divisors is an integer number (412263540).

Almost surely, 2^1648812233 is an apocalyptic number.

It is an amenable number.

1648812233 is a deficient number, since it is larger than the sum of its proper divisors (241927).

1648812233 is an equidigital number, since it uses as much as digits as its factorization.

1648812233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241926.

The product of its digits is 55296, while the sum is 38.

The square root of 1648812233 is about 40605.5689899797. The cubic root of 1648812233 is about 1181.3821382448.

The spelling of 1648812233 in words is "one billion, six hundred forty-eight million, eight hundred twelve thousand, two hundred thirty-three".