1078641617 has 2 divisors, whose sum is σ = 1078641618. Its totient is φ = 1078641616.

The previous prime is 1078641569. The next prime is 1078641623. The reversal of 1078641617 is 7161468701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 878588881 + 200052736 = 29641^2 + 14144^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078641617 - 2²⁸ = 810206161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1078644617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539320808 + 539320809.

It is an arithmetic number, because the mean of its divisors is an integer number (539320809).

Almost surely, 2^1078641617 is an apocalyptic number.

It is an amenable number.

1078641617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078641617 is an equidigital number, since it uses as much as digits as its factorization.

1078641617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 1078641617 is about 32842.6798084444. The cubic root of 1078641617 is about 1025.5552389724. Note that the first 3 decimals are identical.

The spelling of 1078641617 in words is "one billion, seventy-eight million, six hundred forty-one thousand, six hundred seventeen".