1953646944 has 48 divisors (see below), whose sum is σ = 5305169520. Its totient is φ = 628759040.

The previous prime is 1953646913. The next prime is 1953646949. The reversal of 1953646944 is 4496463591.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1953646949) 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 7 ways as a sum of consecutive naturals, for example, 348087 + ... + 353654.

It is an arithmetic number, because the mean of its divisors is an integer number (110524365).

Almost surely, 2^1953646944 is an apocalyptic number.

It is an amenable number.

1953646944 is an abundant number, since it is smaller than the sum of its proper divisors (3351522576).

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

1953646944 is a wasteful number, since it uses less digits than its factorization.

1953646944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701783 (or 701775 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 51.

The square root of 1953646944 is about 44200.0785519664. The cubic root of 1953646944 is about 1250.1113381361. Note that the first 3 decimals are identical.

The spelling of 1953646944 in words is "one billion, nine hundred fifty-three million, six hundred forty-six thousand, nine hundred forty-four".