3681773208 has 96 divisors (see below), whose sum is σ = 10686405600. Its totient is φ = 1142152704.

The previous prime is 3681773143. The next prime is 3681773233. The reversal of 3681773208 is 8023771863.

3681773208 is a `hidden beast` number, since 368 + 17 + 73 + 208 = 666.

It is a super-2 number, since 2×3681773208² = 27110907910293222528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31228 + ... + 91316.

It is an arithmetic number, because the mean of its divisors is an integer number (111316725).

Almost surely, 2^3681773208 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 3681773208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5343202800).

3681773208 is an abundant number, since it is smaller than the sum of its proper divisors (7004632392).

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

3681773208 is a wasteful number, since it uses less digits than its factorization.

3681773208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60161 (or 60154 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 3681773208 is about 60677.6170263797. The cubic root of 3681773208 is about 1544.1364602829.

The spelling of 3681773208 in words is "three billion, six hundred eighty-one million, seven hundred seventy-three thousand, two hundred eight".