3546981561 has 8 divisors (see below), whose sum is σ = 4892388480. Its totient is φ = 2283114512.

The previous prime is 3546981551. The next prime is 3546981583. The reversal of 3546981561 is 1651896453.

3546981561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3546981561 - 2⁶ = 3546981497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3546981561.

It is not an unprimeable number, because it can be changed into a prime (3546981551) 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 7 ways as a sum of consecutive naturals, for example, 20384865 + ... + 20385038.

It is an arithmetic number, because the mean of its divisors is an integer number (611548560).

Almost surely, 2^3546981561 is an apocalyptic number.

It is an amenable number.

3546981561 is a deficient number, since it is larger than the sum of its proper divisors (1345406919).

3546981561 is a wasteful number, since it uses less digits than its factorization.

3546981561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40769935.

The product of its digits is 777600, while the sum is 48.

The square root of 3546981561 is about 59556.5408750374. The cubic root of 3546981561 is about 1525.0578225500.

The spelling of 3546981561 in words is "three billion, five hundred forty-six million, nine hundred eighty-one thousand, five hundred sixty-one".