3691779168 has 144 divisors (see below), whose sum is σ = 12298112064. Its totient is φ = 958890240.

The previous prime is 3691779167. The next prime is 3691779193. The reversal of 3691779168 is 8619771963.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3691779167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16071 + ... + 87417.

It is an arithmetic number, because the mean of its divisors is an integer number (85403556).

Almost surely, 2^3691779168 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 3691779168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6149056032).

3691779168 is an abundant number, since it is smaller than the sum of its proper divisors (8606332896).

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

3691779168 is a wasteful number, since it uses less digits than its factorization.

3691779168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71385 (or 71370 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 57.

The square root of 3691779168 is about 60760.0129032244. The cubic root of 3691779168 is about 1545.5340289002.

The spelling of 3691779168 in words is "three billion, six hundred ninety-one million, seven hundred seventy-nine thousand, one hundred sixty-eight".