3645531412 has 24 divisors (see below), whose sum is σ = 6663172320. Its totient is φ = 1743438240.

The previous prime is 3645531401. The next prime is 3645531413. The reversal of 3645531412 is 2141355463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645531413) 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, 200014 + ... + 217477.

It is an arithmetic number, because the mean of its divisors is an integer number (277632180).

Almost surely, 2^3645531412 is an apocalyptic number.

It is an amenable number.

3645531412 is a deficient number, since it is larger than the sum of its proper divisors (3017640908).

3645531412 is a wasteful number, since it uses less digits than its factorization.

3645531412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417591 (or 417589 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 3645531412 is about 60378.2362445277. The cubic root of 3645531412 is about 1539.0531386412.

Adding to 3645531412 its reverse (2141355463), we get a palindrome (5786886875).

The spelling of 3645531412 in words is "three billion, six hundred forty-five million, five hundred thirty-one thousand, four hundred twelve".