2143167720 has 64 divisors (see below), whose sum is σ = 6476483520. Its totient is φ = 567335424.

The previous prime is 2143167683. The next prime is 2143167739. The reversal of 2143167720 is 277613412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48742 + ... + 81621.

It is an arithmetic number, because the mean of its divisors is an integer number (101195055).

Almost surely, 2^2143167720 is an apocalyptic number.

2143167720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143167720 is an abundant number, since it is smaller than the sum of its proper divisors (4333315800).

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

2143167720 is a wasteful number, since it uses less digits than its factorization.

2143167720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130514 (or 130510 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 2143167720 is about 46294.3594836347. The cubic root of 2143167720 is about 1289.2942717563.

The spelling of 2143167720 in words is "two billion, one hundred forty-three million, one hundred sixty-seven thousand, seven hundred twenty".