4531640165 has 16 divisors (see below), whose sum is σ = 5858053488. Its totient is φ = 3345424896.

The previous prime is 4531640161. The next prime is 4531640167. The reversal of 4531640165 is 5610461354.

It can be written as a sum of positive squares in 8 ways, for example, as 2640520996 + 1891119169 = 51386^2 + 43487^2 .

It is a cyclic number.

It is not a de Polignac number, because 4531640165 - 2² = 4531640161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4531640161) 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 15 ways as a sum of consecutive naturals, for example, 256187 + ... + 273303.

It is an arithmetic number, because the mean of its divisors is an integer number (366128343).

Almost surely, 2^4531640165 is an apocalyptic number.

It is an amenable number.

4531640165 is a deficient number, since it is larger than the sum of its proper divisors (1326413323).

4531640165 is a wasteful number, since it uses less digits than its factorization.

4531640165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21208.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 4531640165 is about 67317.4580996639. The cubic root of 4531640165 is about 1654.8239806958.

The spelling of 4531640165 in words is "four billion, five hundred thirty-one million, six hundred forty thousand, one hundred sixty-five".