1178605667 has 2 divisors, whose sum is σ = 1178605668. Its totient is φ = 1178605666.

The previous prime is 1178605627. The next prime is 1178605669. The reversal of 1178605667 is 7665068711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1178605667 - 2⁸ = 1178605411 is a prime.

It is a super-2 number, since 2×1178605667² = 2778222636569029778, which contains 22 as substring.

Together with 1178605669, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1178605669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589302833 + 589302834.

It is an arithmetic number, because the mean of its divisors is an integer number (589302834).

Almost surely, 2^1178605667 is an apocalyptic number.

1178605667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1178605667 is an equidigital number, since it uses as much as digits as its factorization.

1178605667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 1178605667 is about 34330.8267741981. The cubic root of 1178605667 is about 1056.3054202822.

The spelling of 1178605667 in words is "one billion, one hundred seventy-eight million, six hundred five thousand, six hundred sixty-seven".