1095967661 has 2 divisors, whose sum is σ = 1095967662. Its totient is φ = 1095967660.

The previous prime is 1095967651. The next prime is 1095967729. The reversal of 1095967661 is 1667695901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 760711561 + 335256100 = 27581^2 + 18310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1095967661 is a prime.

It is a super-2 number, since 2×1095967661² = 2402290227915621842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1095967651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547983830 + 547983831.

It is an arithmetic number, because the mean of its divisors is an integer number (547983831).

Almost surely, 2^1095967661 is an apocalyptic number.

It is an amenable number.

1095967661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1095967661 is an equidigital number, since it uses as much as digits as its factorization.

1095967661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 1095967661 is about 33105.4022932814. The cubic root of 1095967661 is about 1031.0172063648.

The spelling of 1095967661 in words is "one billion, ninety-five million, nine hundred sixty-seven thousand, six hundred sixty-one".