3845612169 has 27 divisors (see below), whose sum is σ = 6463863783. Its totient is φ = 2196748512.

The previous prime is 3845612159. The next prime is 3845612171. The reversal of 3845612169 is 9612165483.

The square root of 3845612169 is 62013.

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

3845612169 is a `hidden beast` number, since 3 + 8 + 4 + 561 + 21 + 69 = 666.

3845612169 is digitally balanced in base 2, 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 only one way, i.e., 3132081225 + 713530944 = 55965^2 + 26712^2 .

It is not a de Polignac number, because 3845612169 - 2⁵ = 3845612137 is a prime.

It is a super-2 number, since 2×3845612169² = 29577465908721769122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3845612119) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1300797 + ... + 1303749.

Almost surely, 2^3845612169 is an apocalyptic number.

3845612169 is the 62013-rd square number.

3845612169 is the 31007-th centered octagonal number.

It is an amenable number.

3845612169 is a deficient number, since it is larger than the sum of its proper divisors (2618251614).

3845612169 is an frugal number, since it uses more digits than its factorization.

3845612169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5926 (or 2963 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The cubic root of 3845612169 is about 1566.7095635505.

It can be divided in two parts, 38456 and 12169, that added together give a 4-th power (50625 = 15⁴).

The spelling of 3845612169 in words is "three billion, eight hundred forty-five million, six hundred twelve thousand, one hundred sixty-nine".