3641436561 has 16 divisors (see below), whose sum is σ = 5568472064. Its totient is φ = 2073464784.

The previous prime is 3641436529. The next prime is 3641436563. The reversal of 3641436561 is 1656341463.

3641436561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3641436561 - 2⁵ = 3641436529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3641436563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300421 + ... + 312306.

It is an arithmetic number, because the mean of its divisors is an integer number (348029504).

Almost surely, 2^3641436561 is an apocalyptic number.

It is an amenable number.

3641436561 is a deficient number, since it is larger than the sum of its proper divisors (1927035503).

3641436561 is a wasteful number, since it uses less digits than its factorization.

3641436561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613020.

The product of its digits is 155520, while the sum is 39.

The square root of 3641436561 is about 60344.3167249410. The cubic root of 3641436561 is about 1538.4766744996.

The spelling of 3641436561 in words is "three billion, six hundred forty-one million, four hundred thirty-six thousand, five hundred sixty-one".