2143782936 has 96 divisors (see below), whose sum is σ = 6123499200. Its totient is φ = 702444960.

The previous prime is 2143782911. The next prime is 2143782937. The reversal of 2143782936 is 6392873412.

It is a junction number, because it is equal to n+sod(n) for n = 2143782891 and 2143782900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143782937) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105351 + ... + 124041.

It is an arithmetic number, because the mean of its divisors is an integer number (63786450).

Almost surely, 2^2143782936 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 2143782936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3061749600).

2143782936 is an abundant number, since it is smaller than the sum of its proper divisors (3979716264).

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

2143782936 is a wasteful number, since it uses less digits than its factorization.

2143782936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18771 (or 18755 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 2143782936 is about 46301.0036176323. The cubic root of 2143782936 is about 1289.4176278787.

The spelling of 2143782936 in words is "two billion, one hundred forty-three million, seven hundred eighty-two thousand, nine hundred thirty-six".