1090661017 has 2 divisors, whose sum is σ = 1090661018. Its totient is φ = 1090661016.

The previous prime is 1090660981. The next prime is 1090661023. The reversal of 1090661017 is 7101660901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1090386441 + 274576 = 33021^2 + 524^2 .

It is a cyclic number.

It is not a de Polignac number, because 1090661017 - 2⁷ = 1090660889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1090661017.

It is not a weakly prime, because it can be changed into another prime (1090661717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545330508 + 545330509.

It is an arithmetic number, because the mean of its divisors is an integer number (545330509).

Almost surely, 2^1090661017 is an apocalyptic number.

It is an amenable number.

1090661017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090661017 is an equidigital number, since it uses as much as digits as its factorization.

1090661017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 1090661017 is about 33025.1573349772. The cubic root of 1090661017 is about 1029.3504614327.

The spelling of 1090661017 in words is "one billion, ninety million, six hundred sixty-one thousand, seventeen".