2156982844 has 12 divisors (see below), whose sum is σ = 3855033504. Its totient is φ = 1055544704.

The previous prime is 2156982833. The next prime is 2156982853. The reversal of 2156982844 is 4482896512.

It is a congruent number.

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, 5736469 + ... + 5736844.

It is an arithmetic number, because the mean of its divisors is an integer number (321252792).

Almost surely, 2^2156982844 is an apocalyptic number.

It is an amenable number.

2156982844 is a deficient number, since it is larger than the sum of its proper divisors (1698050660).

2156982844 is a wasteful number, since it uses less digits than its factorization.

2156982844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11473364 (or 11473362 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 49.

The square root of 2156982844 is about 46443.3293810855. The cubic root of 2156982844 is about 1292.0586571215.

The spelling of 2156982844 in words is "two billion, one hundred fifty-six million, nine hundred eighty-two thousand, eight hundred forty-four".