181316352 has 144 divisors (see below), whose sum is σ = 571011840. Its totient is φ = 49975296.

The previous prime is 181316341. The next prime is 181316353. The reversal of 181316352 is 253613181.

It is not an unprimeable number, because it can be changed into a prime (181316353) 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, 155323 + ... + 156485.

It is an arithmetic number, because the mean of its divisors is an integer number (3965360).

Almost surely, 2^181316352 is an apocalyptic number.

181316352 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 181316352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285505920).

181316352 is an abundant number, since it is smaller than the sum of its proper divisors (389695488).

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

181316352 is a wasteful number, since it uses less digits than its factorization.

181316352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218 (or 1204 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 181316352 is about 13465.3760437650. The cubic root of 181316352 is about 565.9946475706.

The spelling of 181316352 in words is "one hundred eighty-one million, three hundred sixteen thousand, three hundred fifty-two".