1181649059 has 2 divisors, whose sum is σ = 1181649060. Its totient is φ = 1181649058.

The previous prime is 1181649017. The next prime is 1181649061. The reversal of 1181649059 is 9509461811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1181649059 - 2⁸ = 1181648803 is a prime.

Together with 1181649061, 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 (1181649559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590824529 + 590824530.

It is an arithmetic number, because the mean of its divisors is an integer number (590824530).

Almost surely, 2^1181649059 is an apocalyptic number.

1181649059 is a deficient number, since it is larger than the sum of its proper divisors (1).

1181649059 is an equidigital number, since it uses as much as digits as its factorization.

1181649059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 44.

The square root of 1181649059 is about 34375.1226761447. The cubic root of 1181649059 is about 1057.2138350523.

The spelling of 1181649059 in words is "one billion, one hundred eighty-one million, six hundred forty-nine thousand, fifty-nine".