468478181 has 4 divisors (see below), whose sum is σ = 468533772. Its totient is φ = 468422592.

The previous prime is 468478159. The next prime is 468478223. The reversal of 468478181 is 181874864.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 371140225 + 97337956 = 19265^2 + 9866^2 .

It is a cyclic number.

It is not a de Polignac number, because 468478181 - 2¹⁴ = 468461797 is a prime.

It is a super-2 number, since 2×468478181² = 438943612146137522, which contains 22 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 (468478121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12260 + ... + 32973.

It is an arithmetic number, because the mean of its divisors is an integer number (117133443).

Almost surely, 2^468478181 is an apocalyptic number.

It is an amenable number.

468478181 is a deficient number, since it is larger than the sum of its proper divisors (55591).

468478181 is a wasteful number, since it uses less digits than its factorization.

468478181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55590.

The product of its digits is 344064, while the sum is 47.

The square root of 468478181 is about 21644.3567934000. The cubic root of 468478181 is about 776.6579454855.

The spelling of 468478181 in words is "four hundred sixty-eight million, four hundred seventy-eight thousand, one hundred eighty-one".