1078636117 has 8 divisors (see below), whose sum is σ = 1162164024. Its totient is φ = 995187648.

The previous prime is 1078636109. The next prime is 1078636147. The reversal of 1078636117 is 7116368701.

It can be written as a sum of positive squares in 4 ways, for example, as 171060241 + 907575876 = 13079^2 + 30126^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1078636117 - 2³ = 1078636109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1078636117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078636147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10023 + ... + 47515.

It is an arithmetic number, because the mean of its divisors is an integer number (145270503).

Almost surely, 2^1078636117 is an apocalyptic number.

It is an amenable number.

1078636117 is a deficient number, since it is larger than the sum of its proper divisors (83527907).

1078636117 is a wasteful number, since it uses less digits than its factorization.

1078636117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39719.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 1078636117 is about 32842.5960758281. The cubic root of 1078636117 is about 1025.5534958653.

The spelling of 1078636117 in words is "one billion, seventy-eight million, six hundred thirty-six thousand, one hundred seventeen".