118221838 has 16 divisors (see below), whose sum is σ = 213333120. Its totient is φ = 47999736.

The previous prime is 118221811. The next prime is 118221871. The reversal of 118221838 is 838122811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221956 + ... + 222487.

It is an arithmetic number, because the mean of its divisors is an integer number (13333320).

Almost surely, 2^118221838 is an apocalyptic number.

118221838 is a deficient number, since it is larger than the sum of its proper divisors (95111282).

118221838 is a wasteful number, since it uses less digits than its factorization.

118221838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444471.

The product of its digits is 6144, while the sum is 34.

The square root of 118221838 is about 10872.9866182204. The cubic root of 118221838 is about 490.7939897023.

The spelling of 118221838 in words is "one hundred eighteen million, two hundred twenty-one thousand, eight hundred thirty-eight".