8541359749 has 8 divisors (see below), whose sum is σ = 9221331672. Its totient is φ = 7864665600.

The previous prime is 8541359719. The next prime is 8541359753. The reversal of 8541359749 is 9479531458.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4939559524 + 3601800225 = 70282^2 + 60015^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8541359749 - 2¹⁹ = 8540835461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8541359749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8541359719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814024 + ... + 824449.

It is an arithmetic number, because the mean of its divisors is an integer number (1152666459).

Almost surely, 2^8541359749 is an apocalyptic number.

It is an amenable number.

8541359749 is a deficient number, since it is larger than the sum of its proper divisors (679971923).

8541359749 is a wasteful number, since it uses less digits than its factorization.

8541359749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638887.

The product of its digits is 5443200, while the sum is 55.

The square root of 8541359749 is about 92419.4771084537. The cubic root of 8541359749 is about 2044.1323187364.

The spelling of 8541359749 in words is "eight billion, five hundred forty-one million, three hundred fifty-nine thousand, seven hundred forty-nine".