1648840372 has 12 divisors (see below), whose sum is σ = 2886883776. Its totient is φ = 824016440.

The previous prime is 1648840343. The next prime is 1648840397. The reversal of 1648840372 is 2730488461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91654 + ... + 108157.

It is an arithmetic number, because the mean of its divisors is an integer number (240573648).

Almost surely, 2^1648840372 is an apocalyptic number.

It is an amenable number.

1648840372 is a deficient number, since it is larger than the sum of its proper divisors (1238043404).

1648840372 is a wasteful number, since it uses less digits than its factorization.

1648840372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201878 (or 201876 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 1648840372 is about 40605.9154803829. The cubic root of 1648840372 is about 1181.3888587842.

The spelling of 1648840372 in words is "one billion, six hundred forty-eight million, eight hundred forty thousand, three hundred seventy-two".