118238401 has 2 divisors, whose sum is σ = 118238402. Its totient is φ = 118238400.

The previous prime is 118238399. The next prime is 118238443. The reversal of 118238401 is 104832811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110670400 + 7568001 = 10520^2 + 2751^2 .

It is a cyclic number.

It is not a de Polignac number, because 118238401 - 2¹ = 118238399 is a prime.

Together with 118238399, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 118238401.

It is not a weakly prime, because it can be changed into another prime (118235401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59119200 + 59119201.

It is an arithmetic number, because the mean of its divisors is an integer number (59119201).

Almost surely, 2^118238401 is an apocalyptic number.

It is an amenable number.

118238401 is a deficient number, since it is larger than the sum of its proper divisors (1).

118238401 is an equidigital number, since it uses as much as digits as its factorization.

118238401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 118238401 is about 10873.7482497987. The cubic root of 118238401 is about 490.8169088781.

The spelling of 118238401 in words is "one hundred eighteen million, two hundred thirty-eight thousand, four hundred one".