3605161849 has 9 divisors (see below), whose sum is σ = 3648605967. Its totient is φ = 3562231104.

The previous prime is 3605161843. The next prime is 3605161853. The reversal of 3605161849 is 9481615063.

The square root of 3605161849 is 60043.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1618855225 + 1986306624 = 40235^2 + 44568^2 .

It is not a de Polignac number, because 3605161849 - 2¹¹ = 3605159801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3605161843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5823862 + ... + 5824480.

It is an arithmetic number, because the mean of its divisors is an integer number (405400663).

Almost surely, 2^3605161849 is an apocalyptic number.

3605161849 is the 60043-rd square number.

3605161849 is the 30022-nd centered octagonal number.

It is an amenable number.

3605161849 is a deficient number, since it is larger than the sum of its proper divisors (43444118).

3605161849 is an frugal number, since it uses more digits than its factorization.

3605161849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The cubic root of 3605161849 is about 1533.3510285870.

The spelling of 3605161849 in words is "three billion, six hundred five million, one hundred sixty-one thousand, eight hundred forty-nine".