810181441 has 4 divisors (see below), whose sum is σ = 827419392. Its totient is φ = 792943492.

The previous prime is 810181433. The next prime is 810181453. The reversal of 810181441 is 144181018.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 144181018 = 2 ⋅72090509.

It is a cyclic number.

It is not a de Polignac number, because 810181441 - 2³ = 810181433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (810181741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8618905 + ... + 8618998.

It is an arithmetic number, because the mean of its divisors is an integer number (206854848).

Almost surely, 2^810181441 is an apocalyptic number.

It is an amenable number.

810181441 is a deficient number, since it is larger than the sum of its proper divisors (17237951).

810181441 is a wasteful number, since it uses less digits than its factorization.

810181441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17237950.

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 810181441 is about 28463.6863564788. The cubic root of 810181441 is about 932.2393489815.

The spelling of 810181441 in words is "eight hundred ten million, one hundred eighty-one thousand, four hundred forty-one".