817441045 has 16 divisors (see below), whose sum is σ = 1036546560. Its totient is φ = 617595264.

The previous prime is 817441043. The next prime is 817441049. The reversal of 817441045 is 540144718.

It is a happy number.

It is not a de Polignac number, because 817441045 - 2¹ = 817441043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 817441045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (817441043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35904 + ... + 54073.

It is an arithmetic number, because the mean of its divisors is an integer number (64784160).

Almost surely, 2^817441045 is an apocalyptic number.

It is an amenable number.

817441045 is a deficient number, since it is larger than the sum of its proper divisors (219105515).

817441045 is a wasteful number, since it uses less digits than its factorization.

817441045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90084.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 817441045 is about 28590.9259206483. The cubic root of 817441045 is about 935.0155068110.

The spelling of 817441045 in words is "eight hundred seventeen million, four hundred forty-one thousand, forty-five".