1178221463 has 2 divisors, whose sum is σ = 1178221464. Its totient is φ = 1178221462.

The previous prime is 1178221453. The next prime is 1178221477. The reversal of 1178221463 is 3641228711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1178221463 - 2⁶ = 1178221399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1178221403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589110731 + 589110732.

It is an arithmetic number, because the mean of its divisors is an integer number (589110732).

Almost surely, 2^1178221463 is an apocalyptic number.

1178221463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1178221463 is an equidigital number, since it uses as much as digits as its factorization.

1178221463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 1178221463 is about 34325.2307057068. The cubic root of 1178221463 is about 1056.1906290263.

The spelling of 1178221463 in words is "one billion, one hundred seventy-eight million, two hundred twenty-one thousand, four hundred sixty-three".