118221894 has 48 divisors (see below), whose sum is σ = 296773152. Its totient is φ = 33312384.

The previous prime is 118221881. The next prime is 118221907. The reversal of 118221894 is 498122811.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (118221881) and next prime (118221907).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2772 + ... + 15624.

It is an arithmetic number, because the mean of its divisors is an integer number (6182774).

Almost surely, 2^118221894 is an apocalyptic number.

118221894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 118221894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148386576).

118221894 is an abundant number, since it is smaller than the sum of its proper divisors (178551258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118221894 is a wasteful number, since it uses less digits than its factorization.

118221894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12941 (or 12938 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 118221894 is about 10872.9891934095. The cubic root of 118221894 is about 490.7940671963.

The spelling of 118221894 in words is "one hundred eighteen million, two hundred twenty-one thousand, eight hundred ninety-four".