118477818 has 48 divisors (see below), whose sum is σ = 266872320. Its totient is φ = 37941792.

The previous prime is 118477763. The next prime is 118477889. The reversal of 118477818 is 818774811.

It is a super-2 number, since 2×118477818² = 28073986716082248, which contains 22 as substring.

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, 136855 + ... + 137717.

It is an arithmetic number, because the mean of its divisors is an integer number (5559840).

Almost surely, 2^118477818 is an apocalyptic number.

118477818 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 118477818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133436160).

118477818 is an abundant number, since it is smaller than the sum of its proper divisors (148394502).

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

118477818 is a wasteful number, since it uses less digits than its factorization.

118477818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163 (or 1160 counting only the distinct ones).

The product of its digits is 100352, while the sum is 45.

The square root of 118477818 is about 10884.7516278508. The cubic root of 118477818 is about 491.1479651339.

The spelling of 118477818 in words is "one hundred eighteen million, four hundred seventy-seven thousand, eight hundred eighteen".