118205001 has 20 divisors (see below), whose sum is σ = 176979924. Its totient is φ = 78624000.

The previous prime is 118204987. The next prime is 118205011. The reversal of 118205001 is 100502811.

It can be written as a sum of positive squares in 2 ways, for example, as 46785600 + 71419401 = 6840^2 + 8451^2 .

It is not a de Polignac number, because 118205001 - 2⁵ = 118204969 is a prime.

It is a super-2 number, since 2×118205001² = 27944844522820002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118205011) 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 in 19 ways as a sum of consecutive naturals, for example, 40801 + ... + 43601.

Almost surely, 2^118205001 is an apocalyptic number.

It is an amenable number.

118205001 is a deficient number, since it is larger than the sum of its proper divisors (58774923).

118205001 is an equidigital number, since it uses as much as digits as its factorization.

118205001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334 (or 3325 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 118205001 is about 10872.2123323636. The cubic root of 118205001 is about 490.7706891828.

Adding to 118205001 its reverse (100502811), we get a palindrome (218707812).

The spelling of 118205001 in words is "one hundred eighteen million, two hundred five thousand, one".