118325821 has 2 divisors, whose sum is σ = 118325822. Its totient is φ = 118325820.

The previous prime is 118325789. The next prime is 118325827. The reversal of 118325821 is 128523811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118156900 + 168921 = 10870^2 + 411^2 .

It is a cyclic number.

It is not a de Polignac number, because 118325821 - 2⁵ = 118325789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118325827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59162910 + 59162911.

It is an arithmetic number, because the mean of its divisors is an integer number (59162911).

Almost surely, 2^118325821 is an apocalyptic number.

It is an amenable number.

118325821 is a deficient number, since it is larger than the sum of its proper divisors (1).

118325821 is an equidigital number, since it uses as much as digits as its factorization.

118325821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 31.

The square root of 118325821 is about 10877.7672800993. The cubic root of 118325821 is about 490.9378415125.

The spelling of 118325821 in words is "one hundred eighteen million, three hundred twenty-five thousand, eight hundred twenty-one".