2157445084 has 24 divisors (see below), whose sum is σ = 3838060800. Its totient is φ = 1060984320.

The previous prime is 2157445067. The next prime is 2157445097. The reversal of 2157445084 is 4805447512.

It is a congruent number.

It is an unprimeable number.

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, 52132 + ... + 83860.

It is an arithmetic number, because the mean of its divisors is an integer number (159919200).

Almost surely, 2^2157445084 is an apocalyptic number.

It is an amenable number.

2157445084 is a deficient number, since it is larger than the sum of its proper divisors (1680615716).

2157445084 is a wasteful number, since it uses less digits than its factorization.

2157445084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32013 (or 32011 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 40.

The square root of 2157445084 is about 46448.3055019233. The cubic root of 2157445084 is about 1292.1509463018.

The spelling of 2157445084 in words is "two billion, one hundred fifty-seven million, four hundred forty-five thousand, eighty-four".