3673443640 has 32 divisors (see below), whose sum is σ = 8751440880. Its totient is φ = 1382943232.

The previous prime is 3673443637. The next prime is 3673443649. The reversal of 3673443640 is 463443763.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 3673443593 and 3673443602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3673443649) 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 7 ways as a sum of consecutive naturals, for example, 2700382 + ... + 2701741.

Almost surely, 2^3673443640 is an apocalyptic number.

It is an amenable number.

3673443640 is an abundant number, since it is smaller than the sum of its proper divisors (5077997240).

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

3673443640 is a wasteful number, since it uses less digits than its factorization.

3673443640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5402151 (or 5402147 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 40.

The square root of 3673443640 is about 60608.9402646177. The cubic root of 3673443640 is about 1542.9711068245.

The spelling of 3673443640 in words is "three billion, six hundred seventy-three million, four hundred forty-three thousand, six hundred forty".