1068115968 has 144 divisors (see below), whose sum is σ = 3112331040. Its totient is φ = 352886784.

The previous prime is 1068115957. The next prime is 1068115981. The reversal of 1068115968 is 8695118601.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×1068115968² = 2281743442193154048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3077971 + ... + 3078317.

It is an arithmetic number, because the mean of its divisors is an integer number (21613410).

Almost surely, 2^1068115968 is an apocalyptic number.

1068115968 is a gapful number since it is divisible by the number (18) 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 1068115968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556165520).

1068115968 is an abundant number, since it is smaller than the sum of its proper divisors (2044215072).

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

1068115968 is a wasteful number, since it uses less digits than its factorization.

1068115968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 1068115968 is about 32682.0435101601. The cubic root of 1068115968 is about 1022.2084559653.

The spelling of 1068115968 in words is "one billion, sixty-eight million, one hundred fifteen thousand, nine hundred sixty-eight".