4193620561 has 8 divisors (see below), whose sum is σ = 4578073640. Its totient is φ = 3818005632.

The previous prime is 4193620523. The next prime is 4193620577. The reversal of 4193620561 is 1650263914.

4193620561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 259822161 + 3933798400 = 16119^2 + 62720^2 .

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 4193620561 - 2²¹ = 4191523409 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 4193620561.

It is not an unprimeable number, because it can be changed into a prime (4193620591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2208546 + ... + 2210443.

It is an arithmetic number, because the mean of its divisors is an integer number (572259205).

Almost surely, 2^4193620561 is an apocalyptic number.

It is an amenable number.

4193620561 is a deficient number, since it is larger than the sum of its proper divisors (384453079).

4193620561 is a wasteful number, since it uses less digits than its factorization.

4193620561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419075.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 4193620561 is about 64758.1698397970. The cubic root of 4193620561 is about 1612.6113456033.

The spelling of 4193620561 in words is "four billion, one hundred ninety-three million, six hundred twenty thousand, five hundred sixty-one".