1068317890 has 16 divisors (see below), whose sum is σ = 1924362360. Its totient is φ = 427018240.

The previous prime is 1068317867. The next prime is 1068317891. The reversal of 1068317890 is 987138601.

It can be written as a sum of positive squares in 4 ways, for example, as 859486489 + 208831401 = 29317^2 + 14451^2 .

It is a super-2 number, since 2×1068317890² = 2282606228188104200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1068317891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23821 + ... + 52000.

Almost surely, 2^1068317890 is an apocalyptic number.

1068317890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1068317890 is a deficient number, since it is larger than the sum of its proper divisors (856044470).

1068317890 is a wasteful number, since it uses less digits than its factorization.

1068317890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77237.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1068317890 is about 32685.1325528902. The cubic root of 1068317890 is about 1022.2728663778.

The spelling of 1068317890 in words is "one billion, sixty-eight million, three hundred seventeen thousand, eight hundred ninety".