118000638 has 80 divisors (see below), whose sum is σ = 320009184. Its totient is φ = 31726080.

The previous prime is 118000607. The next prime is 118000639. The reversal of 118000638 is 836000811.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118000639) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16218 + ... + 22338.

Almost surely, 2^118000638 is an apocalyptic number.

118000638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 118000638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160004592).

118000638 is an abundant number, since it is smaller than the sum of its proper divisors (202008546).

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

118000638 is a wasteful number, since it uses less digits than its factorization.

118000638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6159 (or 6150 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 118000638 is about 10862.8098574908. The cubic root of 118000638 is about 490.4876971355.

The spelling of 118000638 in words is "one hundred eighteen million, six hundred thirty-eight", and thus it is an aban number.