1020558108 has 12 divisors (see below), whose sum is σ = 2381302280. Its totient is φ = 340186032.

The previous prime is 1020558107. The next prime is 1020558179. The reversal of 1020558108 is 8018550201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020558107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42523243 + ... + 42523266.

Almost surely, 2^1020558108 is an apocalyptic number.

It is an amenable number.

1020558108 is an abundant number, since it is smaller than the sum of its proper divisors (1360744172).

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

1020558108 is a wasteful number, since it uses less digits than its factorization.

1020558108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85046516 (or 85046514 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 1020558108 is about 31946.1751701201. The cubic root of 1020558108 is about 1006.8062722241.

The spelling of 1020558108 in words is "one billion, twenty million, five hundred fifty-eight thousand, one hundred eight".