118281806749 has 2 divisors, whose sum is σ = 118281806750. Its totient is φ = 118281806748.

The previous prime is 118281806717. The next prime is 118281806761. The reversal of 118281806749 is 947608182811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117524181124 + 757625625 = 342818^2 + 27525^2 .

It is a cyclic number.

It is not a de Polignac number, because 118281806749 - 2⁵ = 118281806717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118281806749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118281806849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59140903374 + 59140903375.

It is an arithmetic number, because the mean of its divisors is an integer number (59140903375).

Almost surely, 2^118281806749 is an apocalyptic number.

It is an amenable number.

118281806749 is a deficient number, since it is larger than the sum of its proper divisors (1).

118281806749 is an equidigital number, since it uses as much as digits as its factorization.

118281806749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1548288, while the sum is 55.

The spelling of 118281806749 in words is "one hundred eighteen billion, two hundred eighty-one million, eight hundred six thousand, seven hundred forty-nine".