118481081 has 2 divisors, whose sum is σ = 118481082. Its totient is φ = 118481080.

The previous prime is 118481071. The next prime is 118481087. The reversal of 118481081 is 180184811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104857600 + 13623481 = 10240^2 + 3691^2 .

It is an emirp because it is prime and its reverse (180184811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118481081 - 2¹⁸ = 118218937 is a prime.

It is a super-2 number, since 2×118481081² = 28075533109857122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118481087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59240540 + 59240541.

It is an arithmetic number, because the mean of its divisors is an integer number (59240541).

Almost surely, 2^118481081 is an apocalyptic number.

It is an amenable number.

118481081 is a deficient number, since it is larger than the sum of its proper divisors (1).

118481081 is an equidigital number, since it uses as much as digits as its factorization.

118481081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 32.

The square root of 118481081 is about 10884.9015154020. The cubic root of 118481081 is about 491.1524739979.

The spelling of 118481081 in words is "one hundred eighteen million, four hundred eighty-one thousand, eighty-one".