1979166486 has 32 divisors (see below), whose sum is σ = 4572194688. Its totient is φ = 564467840.

The previous prime is 1979166479. The next prime is 1979166487. The reversal of 1979166486 is 6846619791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979166487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 880860 + ... + 883103.

It is an arithmetic number, because the mean of its divisors is an integer number (142881084).

Almost surely, 2^1979166486 is an apocalyptic number.

1979166486 is an abundant number, since it is smaller than the sum of its proper divisors (2593028202).

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

1979166486 is a wasteful number, since it uses less digits than its factorization.

1979166486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763996.

The product of its digits is 3919104, while the sum is 57.

The square root of 1979166486 is about 44487.8240196124. The cubic root of 1979166486 is about 1255.5310072831.

It can be divided in two parts, 197916 and 6486, that added together give a palindrome (204402).

The spelling of 1979166486 in words is "one billion, nine hundred seventy-nine million, one hundred sixty-six thousand, four hundred eighty-six".