3640824161 has 8 divisors (see below), whose sum is σ = 4026858024. Its totient is φ = 3269928960.

The previous prime is 3640824151. The next prime is 3640824163. The reversal of 3640824161 is 1614280463.

It can be written as a sum of positive squares in 4 ways, for example, as 115433536 + 3525390625 = 10744^2 + 59375^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3640824161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3640824163) 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, 3784160 + ... + 3785121.

It is an arithmetic number, because the mean of its divisors is an integer number (503357253).

Almost surely, 2^3640824161 is an apocalyptic number.

It is an amenable number.

3640824161 is a deficient number, since it is larger than the sum of its proper divisors (386033863).

3640824161 is a wasteful number, since it uses less digits than its factorization.

3640824161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7569331.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 3640824161 is about 60339.2422971983. The cubic root of 3640824161 is about 1538.3904250281.

The spelling of 3640824161 in words is "three billion, six hundred forty million, eight hundred twenty-four thousand, one hundred sixty-one".