17979045380 has 12 divisors (see below), whose sum is σ = 37755995340. Its totient is φ = 7191618144.

The previous prime is 17979045367. The next prime is 17979045401. The reversal of 17979045380 is 8354097971.

It can be written as a sum of positive squares in 2 ways, for example, as 9789519364 + 8189526016 = 98942^2 + 90496^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449476115 + ... + 449476154.

It is an arithmetic number, because the mean of its divisors is an integer number (3146332945).

Almost surely, 2^17979045380 is an apocalyptic number.

17979045380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17979045380 is an abundant number, since it is smaller than the sum of its proper divisors (19776949960).

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

17979045380 is a wasteful number, since it uses less digits than its factorization.

17979045380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898952278 (or 898952276 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 17979045380 in words is "seventeen billion, nine hundred seventy-nine million, forty-five thousand, three hundred eighty".