118209893 has 2 divisors, whose sum is σ = 118209894. Its totient is φ = 118209892.

The previous prime is 118209869. The next prime is 118209941. The reversal of 118209893 is 398902811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114019684 + 4190209 = 10678^2 + 2047^2 .

It is an emirp because it is prime and its reverse (398902811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118209893 - 2¹⁰ = 118208869 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 118209893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118209803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59104946 + 59104947.

It is an arithmetic number, because the mean of its divisors is an integer number (59104947).

Almost surely, 2^118209893 is an apocalyptic number.

It is an amenable number.

118209893 is a deficient number, since it is larger than the sum of its proper divisors (1).

118209893 is an equidigital number, since it uses as much as digits as its factorization.

118209893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 118209893 is about 10872.4373072462. The cubic root of 118209893 is about 490.7774593901. Note that the first 3 decimals are identical.

The spelling of 118209893 in words is "one hundred eighteen million, two hundred nine thousand, eight hundred ninety-three".