4161490645 has 12 divisors (see below), whose sum is σ = 5407476516. Its totient is φ = 3073100160.

The previous prime is 4161490643. The next prime is 4161490651. The reversal of 4161490645 is 5460941614.

4161490645 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 6 ways, for example, as 312653124 + 3848837521 = 17682^2 + 62039^2 .

It is not a de Polignac number, because 4161490645 - 2¹ = 4161490643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4161490598 and 4161490607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4161490643) 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 11 ways as a sum of consecutive naturals, for example, 2461576 + ... + 2463265.

It is an arithmetic number, because the mean of its divisors is an integer number (450623043).

Almost surely, 2^4161490645 is an apocalyptic number.

It is an amenable number.

4161490645 is a deficient number, since it is larger than the sum of its proper divisors (1245985871).

4161490645 is a wasteful number, since it uses less digits than its factorization.

4161490645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4924872 (or 4924859 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 4161490645 is about 64509.6166861965. The cubic root of 4161490645 is about 1608.4823790450.

The spelling of 4161490645 in words is "four billion, one hundred sixty-one million, four hundred ninety thousand, six hundred forty-five".