232181645 has 8 divisors (see below), whose sum is σ = 284546304. Its totient is φ = 181793104.

The previous prime is 232181641. The next prime is 232181671. The reversal of 232181645 is 546181232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 232181645 - 2² = 232181641 is a prime.

It is a super-3 number, since 3×232181645³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232181641) 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, 493769 + ... + 494238.

It is an arithmetic number, because the mean of its divisors is an integer number (35568288).

Almost surely, 2^232181645 is an apocalyptic number.

It is an amenable number.

232181645 is a deficient number, since it is larger than the sum of its proper divisors (52364659).

232181645 is an equidigital number, since it uses as much as digits as its factorization.

232181645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988059.

The product of its digits is 11520, while the sum is 32.

The square root of 232181645 is about 15237.5078342884. The cubic root of 232181645 is about 614.6236885295.

The spelling of 232181645 in words is "two hundred thirty-two million, one hundred eighty-one thousand, six hundred forty-five".