1078243669 has 2 divisors, whose sum is σ = 1078243670. Its totient is φ = 1078243668.

The previous prime is 1078243667. The next prime is 1078243709. The reversal of 1078243669 is 9663428701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 982007569 + 96236100 = 31337^2 + 9810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078243669 - 2¹ = 1078243667 is a prime.

It is a super-2 number, since 2×1078243669² = 2325218819477163122, which contains 22 as substring.

Together with 1078243667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1078243667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539121834 + 539121835.

It is an arithmetic number, because the mean of its divisors is an integer number (539121835).

Almost surely, 2^1078243669 is an apocalyptic number.

It is an amenable number.

1078243669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078243669 is an equidigital number, since it uses as much as digits as its factorization.

1078243669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 1078243669 is about 32836.6208523350. The cubic root of 1078243669 is about 1025.4291025895.

It can be divided in two parts, 107824 and 3669, that multiplied together give a triangular number (395606256 = T₂₈₁₂₈).

The spelling of 1078243669 in words is "one billion, seventy-eight million, two hundred forty-three thousand, six hundred sixty-nine".