118540812 has 48 divisors (see below), whose sum is σ = 302779232. Its totient is φ = 35873280.

The previous prime is 118540801. The next prime is 118540861. The reversal of 118540812 is 218045811.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 118540812.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3288 + ... + 15744.

Almost surely, 2^118540812 is an apocalyptic number.

118540812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118540812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151389616).

118540812 is an abundant number, since it is smaller than the sum of its proper divisors (184238420).

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

118540812 is a wasteful number, since it uses less digits than its factorization.

118540812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12538 (or 12536 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 118540812 is about 10887.6449244086. The cubic root of 118540812 is about 491.2349965958.

The spelling of 118540812 in words is "one hundred eighteen million, five hundred forty thousand, eight hundred twelve".