118981632 has 176 divisors, whose sum is σ = 396168192. Its totient is φ = 30842880.

The previous prime is 118981619. The next prime is 118981633. The reversal of 118981632 is 236189811.

It is a tau number, because it is divible by the number of its divisors (176).

It is not an unprimeable number, because it can be changed into a prime (118981633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236293 + ... + 236795.

Almost surely, 2^118981632 is an apocalyptic number.

118981632 is a gapful number since it is divisible by the number (12) 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 118981632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198084096).

118981632 is an abundant number, since it is smaller than the sum of its proper divisors (277186560).

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

118981632 is a wasteful number, since it uses less digits than its factorization.

118981632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 526 counting only the distinct ones).

The product of its digits is 20736, while the sum is 39.

The square root of 118981632 is about 10907.8701862463. The cubic root of 118981632 is about 491.8431650285.

It can be divided in two parts, 11898 and 1632, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 118981632 in words is "one hundred eighteen million, nine hundred eighty-one thousand, six hundred thirty-two".