1068311818 has 12 divisors (see below), whose sum is σ = 1864095282. Its totient is φ = 457847880.

The previous prime is 1068311813. The next prime is 1068311821. The reversal of 1068311818 is 8181138601.

It can be written as a sum of positive squares in only one way, i.e., 1054495729 + 13816089 = 32473^2 + 3717^2 .

It is a super-2 number, since 2×1068311818² = 2282580280956930248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1068311813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5450473 + ... + 5450668.

Almost surely, 2^1068311818 is an apocalyptic number.

1068311818 is a deficient number, since it is larger than the sum of its proper divisors (795783464).

1068311818 is a wasteful number, since it uses less digits than its factorization.

1068311818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10901157 (or 10901150 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 1068311818 is about 32685.0396664896. The cubic root of 1068311818 is about 1022.2709296096.

The spelling of 1068311818 in words is "one billion, sixty-eight million, three hundred eleven thousand, eight hundred eighteen".