3651689212 has 24 divisors (see below), whose sum is σ = 6411046320. Its totient is φ = 1819973760.

The previous prime is 3651689207. The next prime is 3651689213. The reversal of 3651689212 is 2129861563.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3651689213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2899839 + ... + 2901097.

It is an arithmetic number, because the mean of its divisors is an integer number (267126930).

Almost surely, 2^3651689212 is an apocalyptic number.

It is an amenable number.

3651689212 is a deficient number, since it is larger than the sum of its proper divisors (2759357108).

3651689212 is a wasteful number, since it uses less digits than its factorization.

3651689212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021 (or 3019 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 3651689212 is about 60429.2082688496. The cubic root of 3651689212 is about 1539.9192081076.

The spelling of 3651689212 in words is "three billion, six hundred fifty-one million, six hundred eighty-nine thousand, two hundred twelve".