118161520 has 40 divisors (see below), whose sum is σ = 277575984. Its totient is φ = 46774272.

The previous prime is 118161503. The next prime is 118161521. The reversal of 118161520 is 25161811.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118161521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147 + ... + 15373.

Almost surely, 2^118161520 is an apocalyptic number.

118161520 is a gapful number since it is divisible by the number (10) 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 118161520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138787992).

118161520 is an abundant number, since it is smaller than the sum of its proper divisors (159414464).

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

118161520 is a wasteful number, since it uses less digits than its factorization.

118161520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15337 (or 15331 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 118161520 is about 10870.2125094223. The cubic root of 118161520 is about 490.7105061189.

The spelling of 118161520 in words is "one hundred eighteen million, one hundred sixty-one thousand, five hundred twenty".