1068144459 has 16 divisors (see below), whose sum is σ = 1510078752. Its totient is φ = 669270528.

The previous prime is 1068144433. The next prime is 1068144461. The reversal of 1068144459 is 9544418601.

It is not a de Polignac number, because 1068144459 - 2¹⁶ = 1068078923 is a prime.

It is a super-2 number, since 2×1068144459² = 2281865170584805362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1068144459.

It is not an unprimeable number, because it can be changed into a prime (1068144479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23097 + ... + 51669.

It is an arithmetic number, because the mean of its divisors is an integer number (94379922).

Almost surely, 2^1068144459 is an apocalyptic number.

1068144459 is a deficient number, since it is larger than the sum of its proper divisors (441934293).

1068144459 is a wasteful number, since it uses less digits than its factorization.

1068144459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29326.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1068144459 is about 32682.4793888101. The cubic root of 1068144459 is about 1022.2175447044.

The spelling of 1068144459 in words is "one billion, sixty-eight million, one hundred forty-four thousand, four hundred fifty-nine".