1944555404 has 24 divisors (see below), whose sum is σ = 3930707088. Its totient is φ = 831895040.

The previous prime is 1944555397. The next prime is 1944555407. The reversal of 1944555404 is 4045554491.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1944555407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1299089 + ... + 1300584.

It is an arithmetic number, because the mean of its divisors is an integer number (163779462).

Almost surely, 2^1944555404 is an apocalyptic number.

It is an amenable number.

1944555404 is an abundant number, since it is smaller than the sum of its proper divisors (1986151684).

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

1944555404 is a wasteful number, since it uses less digits than its factorization.

1944555404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599705 (or 2599703 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The square root of 1944555404 is about 44097.1133295593. The cubic root of 1944555404 is about 1248.1691391882.

The spelling of 1944555404 in words is "one billion, nine hundred forty-four million, five hundred fifty-five thousand, four hundred four".