2143475136 has 140 divisors (see below), whose sum is σ = 6931746360. Its totient is φ = 649520640.

The previous prime is 2143475123. The next prime is 2143475143. The reversal of 2143475136 is 6315743412.

2143475136 is a `hidden beast` number, since 21 + 434 + 75 + 136 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2143475136.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 38230 + ... + 75818.

It is an arithmetic number, because the mean of its divisors is an integer number (49512474).

Almost surely, 2^2143475136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143475136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3465873180).

2143475136 is an abundant number, since it is smaller than the sum of its proper divisors (4788271224).

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

2143475136 is a wasteful number, since it uses less digits than its factorization.

2143475136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37624 (or 37605 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 2143475136 is about 46297.6795962821. The cubic root of 2143475136 is about 1289.3559142703.

The spelling of 2143475136 in words is "two billion, one hundred forty-three million, four hundred seventy-five thousand, one hundred thirty-six".