1158965020 has 12 divisors (see below), whose sum is σ = 2433826584. Its totient is φ = 463586000.

The previous prime is 1158964973. The next prime is 1158965033. The reversal of 1158965020 is 205698511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28974106 + ... + 28974145.

It is an arithmetic number, because the mean of its divisors is an integer number (202818882).

Almost surely, 2^1158965020 is an apocalyptic number.

1158965020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1158965020 is an abundant number, since it is smaller than the sum of its proper divisors (1274861564).

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

1158965020 is a wasteful number, since it uses less digits than its factorization.

1158965020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57948260 (or 57948258 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The square root of 1158965020 is about 34043.5753116502. The cubic root of 1158965020 is about 1050.4049896542.

The spelling of 1158965020 in words is "one billion, one hundred fifty-eight million, nine hundred sixty-five thousand, twenty".