2143339380 has 720 divisors, whose sum is σ = 8824628736. Its totient is φ = 431101440.

The previous prime is 2143339321. The next prime is 2143339397. The reversal of 2143339380 is 839333412.

2143339380 is a `hidden beast` number, since 214 + 33 + 39 + 380 = 666.

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

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 239 ways as a sum of consecutive naturals, for example, 31990107 + ... + 31990173.

Almost surely, 2^2143339380 is an apocalyptic number.

2143339380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143339380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4412314368).

2143339380 is an abundant number, since it is smaller than the sum of its proper divisors (6681289356).

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

2143339380 is a wasteful number, since it uses less digits than its factorization.

2143339380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 2143339380 is about 46296.2134520740. The cubic root of 2143339380 is about 1289.3286934434.

The spelling of 2143339380 in words is "two billion, one hundred forty-three million, three hundred thirty-nine thousand, three hundred eighty".