1791264644 has 48 divisors (see below), whose sum is σ = 3444268800. Its totient is φ = 810141696.

The previous prime is 1791264617. The next prime is 1791264647. The reversal of 1791264644 is 4464621971.

It is a junction number, because it is equal to n+sod(n) for n = 1791264595 and 1791264604.

It is not an unprimeable number, because it can be changed into a prime (1791264647) 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 15 ways as a sum of consecutive naturals, for example, 569444 + ... + 572580.

It is an arithmetic number, because the mean of its divisors is an integer number (71755600).

Almost surely, 2^1791264644 is an apocalyptic number.

It is an amenable number.

1791264644 is a deficient number, since it is larger than the sum of its proper divisors (1653004156).

1791264644 is a wasteful number, since it uses less digits than its factorization.

1791264644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372 (or 3370 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 1791264644 is about 42323.3345094642. The cubic root of 1791264644 is about 1214.4694221262.

The spelling of 1791264644 in words is "one billion, seven hundred ninety-one million, two hundred sixty-four thousand, six hundred forty-four".