3694840140 has 96 divisors (see below), whose sum is σ = 10636867584. Its totient is φ = 957830400.

The previous prime is 3694840133. The next prime is 3694840141. The reversal of 3694840140 is 410484963.

It is a happy number.

3694840140 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 (3694840141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421482 + ... + 430158.

It is an arithmetic number, because the mean of its divisors is an integer number (110800704).

Almost surely, 2^3694840140 is an apocalyptic number.

3694840140 is a gapful number since it is divisible by the number (30) 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 3694840140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5318433792).

3694840140 is an abundant number, since it is smaller than the sum of its proper divisors (6942027444).

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

3694840140 is a wasteful number, since it uses less digits than its factorization.

3694840140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8887 (or 8885 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 3694840140 is about 60785.1967176220. The cubic root of 3694840140 is about 1545.9610614391.

The spelling of 3694840140 in words is "three billion, six hundred ninety-four million, eight hundred forty thousand, one hundred forty".