1078641173 has 2 divisors, whose sum is σ = 1078641174. Its totient is φ = 1078641172.

The previous prime is 1078641163. The next prime is 1078641209. The reversal of 1078641173 is 3711468701.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 762974884 + 315666289 = 27622^2 + 17767^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078641173 - 2²⁶ = 1011532309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1078641163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539320586 + 539320587.

It is an arithmetic number, because the mean of its divisors is an integer number (539320587).

Almost surely, 2^1078641173 is an apocalyptic number.

It is an amenable number.

1078641173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078641173 is an equidigital number, since it uses as much as digits as its factorization.

1078641173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 1078641173 is about 32842.6730489465. The cubic root of 1078641173 is about 1025.5550982563. Note that the first 3 decimals are identical.

The spelling of 1078641173 in words is "one billion, seventy-eight million, six hundred forty-one thousand, one hundred seventy-three".