3621749312 has 56 divisors (see below), whose sum is σ = 7433218560. Its totient is φ = 1749795840.

The previous prime is 3621749311. The next prime is 3621749321. The reversal of 3621749312 is 2139471263.

3621749312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3621749311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230012 + ... + 245252.

Almost surely, 2^3621749312 is an apocalyptic number.

3621749312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3621749312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3716609280).

3621749312 is an abundant number, since it is smaller than the sum of its proper divisors (3811469248).

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

3621749312 is a wasteful number, since it uses less digits than its factorization.

3621749312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15379 (or 15369 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 3621749312 is about 60180.9713447698. The cubic root of 3621749312 is about 1535.6990965109.

The spelling of 3621749312 in words is "three billion, six hundred twenty-one million, seven hundred forty-nine thousand, three hundred twelve".