1158281980 has 24 divisors (see below), whose sum is σ = 2491720560. Its totient is φ = 452012160.

The previous prime is 1158281977. The next prime is 1158282017. The reversal of 1158281980 is 891828511.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 705450 + ... + 707089.

It is an arithmetic number, because the mean of its divisors is an integer number (103821690).

Almost surely, 2^1158281980 is an apocalyptic number.

1158281980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1158281980 is an abundant number, since it is smaller than the sum of its proper divisors (1333438580).

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

1158281980 is a wasteful number, since it uses less digits than its factorization.

1158281980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412589 (or 1412587 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 43.

The square root of 1158281980 is about 34033.5419843424. The cubic root of 1158281980 is about 1050.1985958444.

The spelling of 1158281980 in words is "one billion, one hundred fifty-eight million, two hundred eighty-one thousand, nine hundred eighty".