3641816412 has 144 divisors (see below), whose sum is σ = 10889948160. Its totient is φ = 1015369344.

The previous prime is 3641816411. The next prime is 3641816413. The reversal of 3641816412 is 2146181463.

3641816412 is a `hidden beast` number, since 3 + 6 + 4 + 1 + 8 + 1 + 641 + 2 = 666.

3641816412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3641816411) and next prime (3641816413).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3641816411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 195613 + ... + 213419.

It is an arithmetic number, because the mean of its divisors is an integer number (75624640).

Almost surely, 2^3641816412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3641816412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5444974080).

3641816412 is an abundant number, since it is smaller than the sum of its proper divisors (7248131748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3641816412 is a wasteful number, since it uses less digits than its factorization.

3641816412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17872 (or 17867 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 3641816412 is about 60347.4640063690. The cubic root of 3641816412 is about 1538.5301672695.

Adding to 3641816412 its reverse (2146181463), we get a palindrome (5787997875).

The spelling of 3641816412 in words is "three billion, six hundred forty-one million, eight hundred sixteen thousand, four hundred twelve".