1181941667 has 2 divisors, whose sum is σ = 1181941668. Its totient is φ = 1181941666.

The previous prime is 1181941637. The next prime is 1181941669. The reversal of 1181941667 is 7661491811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1181941667 - 2¹² = 1181937571 is a prime.

It is a super-2 number, since 2×1181941667² = 2793972208381477778, which contains 22 as substring.

Together with 1181941669, 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 (1181941669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590970833 + 590970834.

It is an arithmetic number, because the mean of its divisors is an integer number (590970834).

Almost surely, 2^1181941667 is an apocalyptic number.

1181941667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1181941667 is an equidigital number, since it uses as much as digits as its factorization.

1181941667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 44.

The square root of 1181941667 is about 34379.3785138708. The cubic root of 1181941667 is about 1057.3010926839.

The spelling of 1181941667 in words is "one billion, one hundred eighty-one million, nine hundred forty-one thousand, six hundred sixty-seven".