118621812 has 12 divisors (see below), whose sum is σ = 276784256. Its totient is φ = 39540600.

The previous prime is 118621799. The next prime is 118621817. The reversal of 118621812 is 218126811.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×118621812² = 28142268564326688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 118621812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118621817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4942564 + ... + 4942587.

Almost surely, 2^118621812 is an apocalyptic number.

118621812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

118621812 is an abundant number, since it is smaller than the sum of its proper divisors (158162444).

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

118621812 is a wasteful number, since it uses less digits than its factorization.

118621812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9885158 (or 9885156 counting only the distinct ones).

The product of its digits is 1536, while the sum is 30.

The square root of 118621812 is about 10891.3641018928. The cubic root of 118621812 is about 491.3468595470.

The spelling of 118621812 in words is "one hundred eighteen million, six hundred twenty-one thousand, eight hundred twelve".