2157948576 has 72 divisors (see below), whose sum is σ = 7013339424. Its totient is φ = 616556160.

The previous prime is 2157948523. The next prime is 2157948577. The reversal of 2157948576 is 6758497512.

2157948576 is a `hidden beast` number, since 2 + 157 + 9 + 485 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (2157948577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 533190 + ... + 537221.

It is an arithmetic number, because the mean of its divisors is an integer number (97407492).

Almost surely, 2^2157948576 is an apocalyptic number.

It is an amenable number.

2157948576 is an abundant number, since it is smaller than the sum of its proper divisors (4855390848).

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

2157948576 is a wasteful number, since it uses less digits than its factorization.

2157948576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070434 (or 1070423 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The square root of 2157948576 is about 46453.7251035910. The cubic root of 2157948576 is about 1292.2514567104.

The spelling of 2157948576 in words is "two billion, one hundred fifty-seven million, nine hundred forty-eight thousand, five hundred seventy-six".