3697638168 has 64 divisors (see below), whose sum is σ = 10599240960. Its totient is φ = 1053012096.

The previous prime is 3697638149. The next prime is 3697638169. The reversal of 3697638168 is 8618367963.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3697638169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15730 + ... + 87422.

It is an arithmetic number, because the mean of its divisors is an integer number (165613140).

Almost surely, 2^3697638168 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 3697638168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5299620480).

3697638168 is an abundant number, since it is smaller than the sum of its proper divisors (6901602792).

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

3697638168 is a wasteful number, since it uses less digits than its factorization.

3697638168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72016 (or 72012 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 57.

The square root of 3697638168 is about 60808.2080643724. The cubic root of 3697638168 is about 1546.3512046952.

The spelling of 3697638168 in words is "three billion, six hundred ninety-seven million, six hundred thirty-eight thousand, one hundred sixty-eight".