181641230 has 32 divisors (see below), whose sum is σ = 332337600. Its totient is φ = 71470080.

The previous prime is 181641227. The next prime is 181641233. The reversal of 181641230 is 32146181.

It is an interprime number because it is at equal distance from previous prime (181641227) and next prime (181641233).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 181641230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181641233) 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, 192560 + ... + 193500.

It is an arithmetic number, because the mean of its divisors is an integer number (10385550).

Almost surely, 2^181641230 is an apocalyptic number.

181641230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

181641230 is a deficient number, since it is larger than the sum of its proper divisors (150696370).

181641230 is a wasteful number, since it uses less digits than its factorization.

181641230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 181641230 is about 13477.4341029738. The cubic root of 181641230 is about 566.3324907802.

The spelling of 181641230 in words is "one hundred eighty-one million, six hundred forty-one thousand, two hundred thirty".