118290439549 has 2 divisors, whose sum is σ = 118290439550. Its totient is φ = 118290439548.

The previous prime is 118290439523. The next prime is 118290439627. The reversal of 118290439549 is 945934092811.

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., 117541322649 + 749116900 = 342843^2 + 27370^2 .

It is an emirp because it is prime and its reverse (945934092811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118290439549 - 2¹⁵ = 118290406781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118290439549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118290439249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59145219774 + 59145219775.

It is an arithmetic number, because the mean of its divisors is an integer number (59145219775).

Almost surely, 2^118290439549 is an apocalyptic number.

It is an amenable number.

118290439549 is a deficient number, since it is larger than the sum of its proper divisors (1).

118290439549 is an equidigital number, since it uses as much as digits as its factorization.

118290439549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 118290439549 in words is "one hundred eighteen billion, two hundred ninety million, four hundred thirty-nine thousand, five hundred forty-nine".