118490081 has 2 divisors, whose sum is σ = 118490082. Its totient is φ = 118490080.

The previous prime is 118490077. The next prime is 118490087. The reversal of 118490081 is 180094811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77721856 + 40768225 = 8816^2 + 6385^2 .

It is a cyclic number.

It is not a de Polignac number, because 118490081 - 2² = 118490077 is a prime.

It is a super-2 number, since 2×118490081² = 28079798590773122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118490087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59245040 + 59245041.

It is an arithmetic number, because the mean of its divisors is an integer number (59245041).

Almost surely, 2^118490081 is an apocalyptic number.

It is an amenable number.

118490081 is a deficient number, since it is larger than the sum of its proper divisors (1).

118490081 is an equidigital number, since it uses as much as digits as its factorization.

118490081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 118490081 is about 10885.3149242454. The cubic root of 118490081 is about 491.1649099084.

The spelling of 118490081 in words is "one hundred eighteen million, four hundred ninety thousand, eighty-one".