1181799679 has 2 divisors, whose sum is σ = 1181799680. Its totient is φ = 1181799678.

The previous prime is 1181799673. The next prime is 1181799719. The reversal of 1181799679 is 9769971811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1181799679 - 2²¹ = 1179702527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1181799673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590899839 + 590899840.

It is an arithmetic number, because the mean of its divisors is an integer number (590899840).

Almost surely, 2^1181799679 is an apocalyptic number.

1181799679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1181799679 is an equidigital number, since it uses as much as digits as its factorization.

1181799679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 58.

The square root of 1181799679 is about 34377.3134348803. The cubic root of 1181799679 is about 1057.2587527265.

The spelling of 1181799679 in words is "one billion, one hundred eighty-one million, seven hundred ninety-nine thousand, six hundred seventy-nine".