1979448686 has 8 divisors (see below), whose sum is σ = 3143830320. Its totient is φ = 931505248.

The previous prime is 1979448683. The next prime is 1979448697. The reversal of 1979448686 is 6868449791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979448683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29109506 + ... + 29109573.

It is an arithmetic number, because the mean of its divisors is an integer number (392978790).

Almost surely, 2^1979448686 is an apocalyptic number.

1979448686 is a deficient number, since it is larger than the sum of its proper divisors (1164381634).

1979448686 is a wasteful number, since it uses less digits than its factorization.

1979448686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58219098.

The product of its digits is 20901888, while the sum is 62.

The square root of 1979448686 is about 44490.9955608997. The cubic root of 1979448686 is about 1255.5906778589.

The spelling of 1979448686 in words is "one billion, nine hundred seventy-nine million, four hundred forty-eight thousand, six hundred eighty-six".