118398618 has 64 divisors (see below), whose sum is σ = 295706880. Its totient is φ = 34841664.

The previous prime is 118398617. The next prime is 118398653. The reversal of 118398618 is 816893811.

It is not an unprimeable number, because it can be changed into a prime (118398617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12480 + ... + 19812.

It is an arithmetic number, because the mean of its divisors is an integer number (4620420).

Almost surely, 2^118398618 is an apocalyptic number.

118398618 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 118398618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147853440).

118398618 is an abundant number, since it is smaller than the sum of its proper divisors (177308262).

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

118398618 is a wasteful number, since it uses less digits than its factorization.

118398618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7380 (or 7374 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 118398618 is about 10881.1129026401. The cubic root of 118398618 is about 491.0384999462.

The spelling of 118398618 in words is "one hundred eighteen million, three hundred ninety-eight thousand, six hundred eighteen".