1012278017 has 2 divisors, whose sum is σ = 1012278018. Its totient is φ = 1012278016.

The previous prime is 1012277993. The next prime is 1012278037. The reversal of 1012278017 is 7108722101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 893053456 + 119224561 = 29884^2 + 10919^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012278017 - 2²⁰ = 1011229441 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012278037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506139008 + 506139009.

It is an arithmetic number, because the mean of its divisors is an integer number (506139009).

Almost surely, 2^1012278017 is an apocalyptic number.

It is an amenable number.

1012278017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012278017 is an equidigital number, since it uses as much as digits as its factorization.

1012278017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 1012278017 is about 31816.3168358627. The cubic root of 1012278017 is about 1004.0760356932.

The spelling of 1012278017 in words is "one billion, twelve million, two hundred seventy-eight thousand, seventeen".