1979729875 has 16 divisors (see below), whose sum is σ = 2474110080. Its totient is φ = 1581600000.

The previous prime is 1979729827. The next prime is 1979729887. The reversal of 1979729875 is 5789279791.

It is not a de Polignac number, because 1979729875 - 2²⁷ = 1845512147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83331 + ... + 104419.

It is an arithmetic number, because the mean of its divisors is an integer number (154631880).

Almost surely, 2^1979729875 is an apocalyptic number.

1979729875 is a deficient number, since it is larger than the sum of its proper divisors (494380205).

1979729875 is an equidigital number, since it uses as much as digits as its factorization.

1979729875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21855 (or 21845 counting only the distinct ones).

The product of its digits is 20003760, while the sum is 64.

The square root of 1979729875 is about 44494.1555150786. The cubic root of 1979729875 is about 1255.6501290204.

The spelling of 1979729875 in words is "one billion, nine hundred seventy-nine million, seven hundred twenty-nine thousand, eight hundred seventy-five".