1068831901 has 2 divisors, whose sum is σ = 1068831902. Its totient is φ = 1068831900.

The previous prime is 1068831899. The next prime is 1068831931. The reversal of 1068831901 is 1091388601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 767844100 + 300987801 = 27710^2 + 17349^2 .

It is an emirp because it is prime and its reverse (1091388601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1068831901 - 2¹ = 1068831899 is a prime.

It is a super-2 number, since 2×1068831901² = 2284803265190547602, which contains 22 as substring.

Together with 1068831899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1068831931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534415950 + 534415951.

It is an arithmetic number, because the mean of its divisors is an integer number (534415951).

Almost surely, 2^1068831901 is an apocalyptic number.

It is an amenable number.

1068831901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068831901 is an equidigital number, since it uses as much as digits as its factorization.

1068831901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 1068831901 is about 32692.9946777593. The cubic root of 1068831901 is about 1022.4367923817.

The spelling of 1068831901 in words is "one billion, sixty-eight million, eight hundred thirty-one thousand, nine hundred one".