1166631451 has 2 divisors, whose sum is σ = 1166631452. Its totient is φ = 1166631450.

The previous prime is 1166631437. The next prime is 1166631481. The reversal of 1166631451 is 1541366611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1166631451 - 2¹⁵ = 1166598683 is a prime.

It is a super-2 number, since 2×1166631451² = 2722057884924730802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1166631481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583315725 + 583315726.

It is an arithmetic number, because the mean of its divisors is an integer number (583315726).

Almost surely, 2^1166631451 is an apocalyptic number.

1166631451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166631451 is an equidigital number, since it uses as much as digits as its factorization.

1166631451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 34.

The square root of 1166631451 is about 34155.9870447335. The cubic root of 1166631451 is about 1052.7160073688.

The spelling of 1166631451 in words is "one billion, one hundred sixty-six million, six hundred thirty-one thousand, four hundred fifty-one".