1979347860 has 96 divisors (see below), whose sum is σ = 7037694720. Its totient is φ = 452421504.

The previous prime is 1979347849. The next prime is 1979347873. The reversal of 1979347860 is 687439791.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1979347797 and 1979347806.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 258039 + ... + 265598.

It is an arithmetic number, because the mean of its divisors is an integer number (73309320).

Almost surely, 2^1979347860 is an apocalyptic number.

1979347860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1979347860 is an abundant number, since it is smaller than the sum of its proper divisors (5058346860).

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

1979347860 is a wasteful number, since it uses less digits than its factorization.

1979347860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523662 (or 523654 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 1979347860 is about 44489.8624407853. The cubic root of 1979347860 is about 1255.5693590718.

The spelling of 1979347860 in words is "one billion, nine hundred seventy-nine million, three hundred forty-seven thousand, eight hundred sixty".