1181406679 has 2 divisors, whose sum is σ = 1181406680. Its totient is φ = 1181406678.

The previous prime is 1181406673. The next prime is 1181406691. The reversal of 1181406679 is 9766041811.

It is a weak prime.

It is an emirp because it is prime and its reverse (9766041811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1181406679 - 2⁵ = 1181406647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1181406673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590703339 + 590703340.

It is an arithmetic number, because the mean of its divisors is an integer number (590703340).

Almost surely, 2^1181406679 is an apocalyptic number.

1181406679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1181406679 is an equidigital number, since it uses as much as digits as its factorization.

1181406679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1181406679 is about 34371.5969806467. The cubic root of 1181406679 is about 1057.1415448321.

The spelling of 1181406679 in words is "one billion, one hundred eighty-one million, four hundred six thousand, six hundred seventy-nine".