181464432 has 20 divisors (see below), whose sum is σ = 468783240. Its totient is φ = 60488128.

The previous prime is 181464407. The next prime is 181464433. The reversal of 181464432 is 234464181.

181464432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 181464393 and 181464402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181464433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1890207 + ... + 1890302.

It is an arithmetic number, because the mean of its divisors is an integer number (23439162).

Almost surely, 2^181464432 is an apocalyptic number.

181464432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

181464432 is an abundant number, since it is smaller than the sum of its proper divisors (287318808).

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

181464432 is a wasteful number, since it uses less digits than its factorization.

181464432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780520 (or 3780514 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 181464432 is about 13470.8734683390. The cubic root of 181464432 is about 566.1486871455.

It can be divided in two parts, 18146 and 4432, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 181464432 in words is "one hundred eighty-one million, four hundred sixty-four thousand, four hundred thirty-two".