3540569849 has 4 divisors (see below), whose sum is σ = 3636260964. Its totient is φ = 3444878736.

The previous prime is 3540569843. The next prime is 3540569863. The reversal of 3540569849 is 9489650453.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3106055824 + 434514025 = 55732^2 + 20845^2 .

It is a cyclic number.

It is not a de Polignac number, because 3540569849 - 2⁴ = 3540569833 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 3540569849.

It is not an unprimeable number, because it can be changed into a prime (3540569843) 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, 47845502 + ... + 47845575.

It is an arithmetic number, because the mean of its divisors is an integer number (909065241).

Almost surely, 2^3540569849 is an apocalyptic number.

It is an amenable number.

3540569849 is a deficient number, since it is larger than the sum of its proper divisors (95691115).

3540569849 is an equidigital number, since it uses as much as digits as its factorization.

3540569849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95691114.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The square root of 3540569849 is about 59502.6877460170. The cubic root of 3540569849 is about 1524.1383431579.

The spelling of 3540569849 in words is "three billion, five hundred forty million, five hundred sixty-nine thousand, eight hundred forty-nine".