1068239551 has 4 divisors (see below), whose sum is σ = 1068305472. Its totient is φ = 1068173632.

The previous prime is 1068239519. The next prime is 1068239573. The reversal of 1068239551 is 1559328601.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1068239551 - 2⁵ = 1068239519 is a prime.

It is a super-2 number, since 2×1068239551² = 2282271476641363202, 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 (1068239351) 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 3 ways as a sum of consecutive naturals, for example, 10095 + ... + 47311.

It is an arithmetic number, because the mean of its divisors is an integer number (267076368).

Almost surely, 2^1068239551 is an apocalyptic number.

1068239551 is a deficient number, since it is larger than the sum of its proper divisors (65921).

1068239551 is an equidigital number, since it uses as much as digits as its factorization.

1068239551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65920.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 1068239551 is about 32683.9341420215. The cubic root of 1068239551 is about 1022.2478782501.

The spelling of 1068239551 in words is "one billion, sixty-eight million, two hundred thirty-nine thousand, five hundred fifty-one".