1166420611 has 2 divisors, whose sum is σ = 1166420612. Its totient is φ = 1166420610.

The previous prime is 1166420587. The next prime is 1166420639. The reversal of 1166420611 is 1160246611.

It is an a-pointer prime, because the next prime (1166420639) can be obtained adding 1166420611 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (1160246611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1166420611 - 2⁵ = 1166420579 is a prime.

It is a super-2 number, since 2×1166420611² = 2721074083531226642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1166420611.

It is not a weakly prime, because it can be changed into another prime (1166420681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583210305 + 583210306.

It is an arithmetic number, because the mean of its divisors is an integer number (583210306).

Almost surely, 2^1166420611 is an apocalyptic number.

1166420611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166420611 is an equidigital number, since it uses as much as digits as its factorization.

1166420611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1166420611 is about 34152.9004771191. The cubic root of 1166420611 is about 1052.6525860215.

The spelling of 1166420611 in words is "one billion, one hundred sixty-six million, four hundred twenty thousand, six hundred eleven".