1166127251 has 2 divisors, whose sum is σ = 1166127252. Its totient is φ = 1166127250.

The previous prime is 1166127229. The next prime is 1166127269. The reversal of 1166127251 is 1527216611.

It is a strong prime.

It is an emirp because it is prime and its reverse (1527216611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1166127251 - 2¹⁴ = 1166110867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1166127211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583063625 + 583063626.

It is an arithmetic number, because the mean of its divisors is an integer number (583063626).

Almost surely, 2^1166127251 is an apocalyptic number.

1166127251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166127251 is an equidigital number, since it uses as much as digits as its factorization.

1166127251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 32.

The square root of 1166127251 is about 34148.6054034422. The cubic root of 1166127251 is about 1052.5643296778.

The spelling of 1166127251 in words is "one billion, one hundred sixty-six million, one hundred twenty-seven thousand, two hundred fifty-one".