118653640 has 32 divisors (see below), whose sum is σ = 305110080. Its totient is φ = 40681152.

The previous prime is 118653637. The next prime is 118653671. The reversal of 118653640 is 46356811.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 118653596 and 118653605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211602 + ... + 212161.

It is an arithmetic number, because the mean of its divisors is an integer number (9534690).

Almost surely, 2^118653640 is an apocalyptic number.

118653640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118653640 is an abundant number, since it is smaller than the sum of its proper divisors (186456440).

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

118653640 is a wasteful number, since it uses less digits than its factorization.

118653640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423781 (or 423777 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 118653640 is about 10892.8251615456. The cubic root of 118653640 is about 491.3908008456.

The spelling of 118653640 in words is "one hundred eighteen million, six hundred fifty-three thousand, six hundred forty".