1955844672 has 56 divisors (see below), whose sum is σ = 5214408672. Its totient is φ = 646963200.

The previous prime is 1955844643. The next prime is 1955844691. The reversal of 1955844672 is 2764485591.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13729 + ... + 64032.

Almost surely, 2^1955844672 is an apocalyptic number.

1955844672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1955844672 is an abundant number, since it is smaller than the sum of its proper divisors (3258564000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1955844672 is a wasteful number, since it uses less digits than its factorization.

1955844672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77907 (or 77897 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 51.

The square root of 1955844672 is about 44224.9326963875. The cubic root of 1955844672 is about 1250.5799275989.

The spelling of 1955844672 in words is "one billion, nine hundred fifty-five million, eight hundred forty-four thousand, six hundred seventy-two".