472008181 has 4 divisors (see below), whose sum is σ = 472056364. Its totient is φ = 471960000.

The previous prime is 472008167. The next prime is 472008193. The reversal of 472008181 is 181800274.

It is the 8870-th star number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 181800274 = 2 ⋅90900137.

It can be written as a sum of positive squares in 2 ways, for example, as 368985681 + 103022500 = 19209^2 + 10150^2 .

It is a cyclic number.

It is not a de Polignac number, because 472008181 - 2¹⁹ = 471483893 is a prime.

It is a super-2 number, since 2×472008181² = 445583445861857522, 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 (472008101) 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, 3570 + ... + 30931.

It is an arithmetic number, because the mean of its divisors is an integer number (118014091).

Almost surely, 2^472008181 is an apocalyptic number.

It is an amenable number.

472008181 is a deficient number, since it is larger than the sum of its proper divisors (48183).

472008181 is a wasteful number, since it uses less digits than its factorization.

472008181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48182.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 472008181 is about 21725.7492621083. The cubic root of 472008181 is about 778.6037815390.

The spelling of 472008181 in words is "four hundred seventy-two million, eight thousand, one hundred eighty-one".