1078217117 has 4 divisors (see below), whose sum is σ = 1088892636. Its totient is φ = 1067541600.

The previous prime is 1078217113. The next prime is 1078217143. The reversal of 1078217117 is 7117128701.

It is a happy number.

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 724363396 + 353853721 = 26914^2 + 18811^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078217117 - 2² = 1078217113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078217113) 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 in 3 ways as a sum of consecutive naturals, for example, 5337608 + ... + 5337809.

It is an arithmetic number, because the mean of its divisors is an integer number (272223159).

Almost surely, 2^1078217117 is an apocalyptic number.

It is an amenable number.

1078217117 is a deficient number, since it is larger than the sum of its proper divisors (10675519).

1078217117 is a wasteful number, since it uses less digits than its factorization.

1078217117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10675518.

The product of its (nonzero) digits is 5488, while the sum is 35.

The square root of 1078217117 is about 32836.2165451503. The cubic root of 1078217117 is about 1025.4206853774.

The spelling of 1078217117 in words is "one billion, seventy-eight million, two hundred seventeen thousand, one hundred seventeen".