1068810638 has 64 divisors (see below), whose sum is σ = 2033942400. Its totient is φ = 419295744.

The previous prime is 1068810637. The next prime is 1068810643. The reversal of 1068810638 is 8360188601.

It is a super-2 number, since 2×1068810638² = 2284712359803934088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1068810595 and 1068810604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068810637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 430256 + ... + 432732.

It is an arithmetic number, because the mean of its divisors is an integer number (31780350).

Almost surely, 2^1068810638 is an apocalyptic number.

1068810638 is a deficient number, since it is larger than the sum of its proper divisors (965131762).

1068810638 is a wasteful number, since it uses less digits than its factorization.

1068810638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554 (or 2540 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 1068810638 is about 32692.6694841519. The cubic root of 1068810638 is about 1022.4300123265.

The spelling of 1068810638 in words is "one billion, sixty-eight million, eight hundred ten thousand, six hundred thirty-eight".