2156359982 has 16 divisors (see below), whose sum is σ = 3701096160. Its totient is φ = 923034528.

The previous prime is 2156359981. The next prime is 2156359987. The reversal of 2156359982 is 2899536512.

It is a self number, because there is not a number n which added to its sum of digits gives 2156359982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156359981) 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, 81293 + ... + 104504.

It is an arithmetic number, because the mean of its divisors is an integer number (231318510).

Almost surely, 2^2156359982 is an apocalyptic number.

2156359982 is a deficient number, since it is larger than the sum of its proper divisors (1544736178).

2156359982 is a wasteful number, since it uses less digits than its factorization.

2156359982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186635.

The product of its digits is 1166400, while the sum is 50.

The square root of 2156359982 is about 46436.6232837832. The cubic root of 2156359982 is about 1291.9342778730.

The spelling of 2156359982 in words is "two billion, one hundred fifty-six million, three hundred fifty-nine thousand, nine hundred eighty-two".