1078364561 has 2 divisors, whose sum is σ = 1078364562. Its totient is φ = 1078364560.

The previous prime is 1078364509. The next prime is 1078364579. The reversal of 1078364561 is 1654638701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1077874561 + 490000 = 32831^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078364561 - 2¹⁰ = 1078363537 is a prime.

It is not a weakly prime, because it can be changed into another prime (1078364501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539182280 + 539182281.

It is an arithmetic number, because the mean of its divisors is an integer number (539182281).

Almost surely, 2^1078364561 is an apocalyptic number.

It is an amenable number.

1078364561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078364561 is an equidigital number, since it uses as much as digits as its factorization.

1078364561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1078364561 is about 32838.4616113484. The cubic root of 1078364561 is about 1025.4674246453.

The spelling of 1078364561 in words is "one billion, seventy-eight million, three hundred sixty-four thousand, five hundred sixty-one".