2146711780 has 24 divisors (see below), whose sum is σ = 4509005760. Its totient is φ = 858511200.

The previous prime is 2146711759. The next prime is 2146711783. The reversal of 2146711780 is 871176412.

It is not an unprimeable number, because it can be changed into a prime (2146711783) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 145755 + ... + 159805.

It is an arithmetic number, because the mean of its divisors is an integer number (187875240).

Almost surely, 2^2146711780 is an apocalyptic number.

2146711780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2146711780 is an abundant number, since it is smaller than the sum of its proper divisors (2362293980).

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

2146711780 is a wasteful number, since it uses less digits than its factorization.

2146711780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21699 (or 21697 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 2146711780 is about 46332.6211216244. The cubic root of 2146711780 is about 1290.0045630109.

The spelling of 2146711780 in words is "two billion, one hundred forty-six million, seven hundred eleven thousand, seven hundred eighty".