1166495653 has 2 divisors, whose sum is σ = 1166495654. Its totient is φ = 1166495652.

The previous prime is 1166495611. The next prime is 1166495663. The reversal of 1166495653 is 3565946611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 631868769 + 534626884 = 25137^2 + 23122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166495653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166495663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583247826 + 583247827.

It is an arithmetic number, because the mean of its divisors is an integer number (583247827).

Almost surely, 2^1166495653 is an apocalyptic number.

It is an amenable number.

1166495653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166495653 is an equidigital number, since it uses as much as digits as its factorization.

1166495653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 46.

The square root of 1166495653 is about 34153.9990777068. Note that the first 3 decimals coincide. The cubic root of 1166495653 is about 1052.6751597714.

The spelling of 1166495653 in words is "one billion, one hundred sixty-six million, four hundred ninety-five thousand, six hundred fifty-three".