2057621964 has 12 divisors (see below), whose sum is σ = 4801117944. Its totient is φ = 685873984.

The previous prime is 2057621959. The next prime is 2057621981. The reversal of 2057621964 is 4691267502.

2057621964 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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, 85734237 + ... + 85734260.

It is an arithmetic number, because the mean of its divisors is an integer number (400093162).

Almost surely, 2^2057621964 is an apocalyptic number.

It is an amenable number.

2057621964 is an abundant number, since it is smaller than the sum of its proper divisors (2743495980).

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

2057621964 is a wasteful number, since it uses less digits than its factorization.

2057621964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171468504 (or 171468502 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 2057621964 is about 45361.0181102673. The cubic root of 2057621964 is about 1271.9065261995.

The spelling of 2057621964 in words is "two billion, fifty-seven million, six hundred twenty-one thousand, nine hundred sixty-four".