3581785216 has 128 divisors (see below), whose sum is σ = 8024054400. Its totient is φ = 1583628288.

The previous prime is 3581785201. The next prime is 3581785231. The reversal of 3581785216 is 6125871853.

3581785216 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 (3581785201) and next prime (3581785231).

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2952226 + ... + 2953438.

It is an arithmetic number, because the mean of its divisors is an integer number (62687925).

Almost surely, 2^3581785216 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 3581785216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4012027200).

3581785216 is an abundant number, since it is smaller than the sum of its proper divisors (4442269184).

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

3581785216 is a wasteful number, since it uses less digits than its factorization.

3581785216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 1314 counting only the distinct ones).

The product of its digits is 403200, while the sum is 46.

The square root of 3581785216 is about 59848.0176446973. The cubic root of 3581785216 is about 1530.0296484209.

The spelling of 3581785216 in words is "three billion, five hundred eighty-one million, seven hundred eighty-five thousand, two hundred sixteen".