118909838 has 4 divisors (see below), whose sum is σ = 178364760. Its totient is φ = 59454918.

The previous prime is 118909829. The next prime is 118909871. The reversal of 118909838 is 838909811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 838909811 = 53 ⋅15828487.

It is a junction number, because it is equal to n+sod(n) for n = 118909792 and 118909801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29727458 + ... + 29727461.

It is an arithmetic number, because the mean of its divisors is an integer number (44591190).

Almost surely, 2^118909838 is an apocalyptic number.

118909838 is a deficient number, since it is larger than the sum of its proper divisors (59454922).

118909838 is an equidigital number, since it uses as much as digits as its factorization.

118909838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59454921.

The product of its (nonzero) digits is 124416, while the sum is 47.

The square root of 118909838 is about 10904.5787630701. The cubic root of 118909838 is about 491.7442184031.

The spelling of 118909838 in words is "one hundred eighteen million, nine hundred nine thousand, eight hundred thirty-eight".