1078148777 has 2 divisors, whose sum is σ = 1078148778. Its totient is φ = 1078148776.

The previous prime is 1078148741. The next prime is 1078148807. The reversal of 1078148777 is 7778418701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 931714576 + 146434201 = 30524^2 + 12101^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078148777 - 2³⁰ = 4406953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1078148377) 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 as a sum of consecutive naturals, namely, 539074388 + 539074389.

It is an arithmetic number, because the mean of its divisors is an integer number (539074389).

Almost surely, 2^1078148777 is an apocalyptic number.

It is an amenable number.

1078148777 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078148777 is an equidigital number, since it uses as much as digits as its factorization.

1078148777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 614656, while the sum is 50.

The square root of 1078148777 is about 32835.1759093811. The cubic root of 1078148777 is about 1025.3990203747.

The spelling of 1078148777 in words is "one billion, seventy-eight million, one hundred forty-eight thousand, seven hundred seventy-seven".