1068278431 has 4 divisors (see below), whose sum is σ = 1165394664. Its totient is φ = 971162200.

The previous prime is 1068278417. The next prime is 1068278437. The reversal of 1068278431 is 1348728601.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1068278431 is a prime.

It is a super-2 number, since 2×1068278431² = 2282437612279643522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068278437) 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, 48558100 + ... + 48558121.

It is an arithmetic number, because the mean of its divisors is an integer number (291348666).

Almost surely, 2^1068278431 is an apocalyptic number.

1068278431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1068278431 is a deficient number, since it is larger than the sum of its proper divisors (97116233).

1068278431 is an equidigital number, since it uses as much as digits as its factorization.

1068278431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97116232.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1068278431 is about 32684.5289242479. The cubic root of 1068278431 is about 1022.2602801236.

The spelling of 1068278431 in words is "one billion, sixty-eight million, two hundred seventy-eight thousand, four hundred thirty-one".