2147985875 has 16 divisors (see below), whose sum is σ = 3063642816. Its totient is φ = 1472904000.

The previous prime is 2147985871. The next prime is 2147985881. The reversal of 2147985875 is 5785897412.

It is not a de Polignac number, because 2147985875 - 2² = 2147985871 is a prime.

It is a super-2 number, since 2×2147985875² = 9227686638399031250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2147985875.

It is not an unprimeable number, because it can be changed into a prime (2147985871) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1226546 + ... + 1228295.

It is an arithmetic number, because the mean of its divisors is an integer number (191477676).

Almost surely, 2^2147985875 is an apocalyptic number.

2147985875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2147985875 is a deficient number, since it is larger than the sum of its proper divisors (915656941).

2147985875 is an equidigital number, since it uses as much as digits as its factorization.

2147985875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454863 (or 2454853 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 56.

The square root of 2147985875 is about 46346.3685200901. The cubic root of 2147985875 is about 1290.2597227587.

The spelling of 2147985875 in words is "two billion, one hundred forty-seven million, nine hundred eighty-five thousand, eight hundred seventy-five".