3812388845 has 18 divisors (see below), whose sum is σ = 4671780414. Its totient is φ = 2986622080.

The previous prime is 3812388829. The next prime is 3812388863. The reversal of 3812388845 is 5488832183.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 736688164 + 3075700681 = 27142^2 + 55459^2 .

It is not a de Polignac number, because 3812388845 - 2⁴ = 3812388829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3812388793 and 3812388802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7317185 + ... + 7317705.

Almost surely, 2^3812388845 is an apocalyptic number.

It is an amenable number.

3812388845 is a deficient number, since it is larger than the sum of its proper divisors (859391569).

3812388845 is an frugal number, since it uses more digits than its factorization.

3812388845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153 (or 579 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 50.

The square root of 3812388845 is about 61744.5450627017. The cubic root of 3812388845 is about 1562.1847600408.

The spelling of 3812388845 in words is "three billion, eight hundred twelve million, three hundred eighty-eight thousand, eight hundred forty-five".