118243349489 has 2 divisors, whose sum is σ = 118243349490. Its totient is φ = 118243349488.

The previous prime is 118243349447. The next prime is 118243349537. The reversal of 118243349489 is 984943342811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76256061025 + 41987288464 = 276145^2 + 204908^2 .

It is a cyclic number.

It is not a de Polignac number, because 118243349489 - 2¹² = 118243345393 is a prime.

It is a super-2 number, since 2×118243349489² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (118243349789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59121674744 + 59121674745.

It is an arithmetic number, because the mean of its divisors is an integer number (59121674745).

Almost surely, 2^118243349489 is an apocalyptic number.

It is an amenable number.

118243349489 is a deficient number, since it is larger than the sum of its proper divisors (1).

118243349489 is an equidigital number, since it uses as much as digits as its factorization.

118243349489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5971968, while the sum is 56.

The spelling of 118243349489 in words is "one hundred eighteen billion, two hundred forty-three million, three hundred forty-nine thousand, four hundred eighty-nine".