1068158820 has 96 divisors (see below), whose sum is σ = 3061473408. Its totient is φ = 278167552.

The previous prime is 1068158803. The next prime is 1068158867. The reversal of 1068158820 is 288518601.

It is a super-2 number, since 2×1068158820² = 2281926529487584800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 816607 + ... + 817913.

It is an arithmetic number, because the mean of its divisors is an integer number (31890348).

Almost surely, 2^1068158820 is an apocalyptic number.

1068158820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1068158820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1530736704).

1068158820 is an abundant number, since it is smaller than the sum of its proper divisors (1993314588).

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

1068158820 is a wasteful number, since it uses less digits than its factorization.

1068158820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629 (or 1627 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 39.

The square root of 1068158820 is about 32682.6990929452. The cubic root of 1068158820 is about 1022.2221258577. Note that the first 3 decimals are identical.

The spelling of 1068158820 in words is "one billion, sixty-eight million, one hundred fifty-eight thousand, eight hundred twenty".