1068904453 has 4 divisors (see below), whose sum is σ = 1069568748. Its totient is φ = 1068240160.

The previous prime is 1068904379. The next prime is 1068904457. The reversal of 1068904453 is 3544098601.

1068904453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 472714564 + 596189889 = 21742^2 + 24417^2 .

It is a cyclic number.

It is not a de Polignac number, because 1068904453 - 2¹³ = 1068896261 is a prime.

It is a super-2 number, since 2×1068904453² = 2285113459286458418, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068904457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329728 + ... + 332953.

It is an arithmetic number, because the mean of its divisors is an integer number (267392187).

Almost surely, 2^1068904453 is an apocalyptic number.

It is an amenable number.

1068904453 is a deficient number, since it is larger than the sum of its proper divisors (664295).

1068904453 is an equidigital number, since it uses as much as digits as its factorization.

1068904453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664294.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1068904453 is about 32694.1042544371. The cubic root of 1068904453 is about 1022.4599260961.

The spelling of 1068904453 in words is "one billion, sixty-eight million, nine hundred four thousand, four hundred fifty-three".