2179142500 has 30 divisors (see below), whose sum is σ = 4765354286. Its totient is φ = 871656000.

The previous prime is 2179142453. The next prime is 2179142513. The reversal of 2179142500 is 52419712.

It can be written as a sum of positive squares in 5 ways, for example, as 920879716 + 1258262784 = 30346^2 + 35472^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 433329 + ... + 438328.

Almost surely, 2^2179142500 is an apocalyptic number.

2179142500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2179142500 is an abundant number, since it is smaller than the sum of its proper divisors (2586211786).

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

2179142500 is an equidigital number, since it uses as much as digits as its factorization.

2179142500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871681 (or 871664 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 2179142500 is about 46681.2864004410. The cubic root of 2179142500 is about 1296.4682243869.

The spelling of 2179142500 in words is "two billion, one hundred seventy-nine million, one hundred forty-two thousand, five hundred".