3645622516 has 24 divisors (see below), whose sum is σ = 6474504960. Its totient is φ = 1795802400.

The previous prime is 3645622507. The next prime is 3645622577. The reversal of 3645622516 is 6152265463.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 456405 + ... + 464323.

It is an arithmetic number, because the mean of its divisors is an integer number (269771040).

Almost surely, 2^3645622516 is an apocalyptic number.

It is an amenable number.

3645622516 is a deficient number, since it is larger than the sum of its proper divisors (2828882444).

3645622516 is a wasteful number, since it uses less digits than its factorization.

3645622516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9615 (or 9613 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 3645622516 is about 60378.9906838463. The cubic root of 3645622516 is about 1539.0659591524.

Adding to 3645622516 its reverse (6152265463), we get a palindrome (9797887979).

The spelling of 3645622516 in words is "three billion, six hundred forty-five million, six hundred twenty-two thousand, five hundred sixteen".