3645954520 has 192 divisors, whose sum is σ = 9361265760. Its totient is φ = 1269596160.

The previous prime is 3645954493. The next prime is 3645954541. The reversal of 3645954520 is 254595463.

3645954520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37587112 + ... + 37587208.

Almost surely, 2^3645954520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3645954520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4680632880).

3645954520 is an abundant number, since it is smaller than the sum of its proper divisors (5715311240).

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

3645954520 is a wasteful number, since it uses less digits than its factorization.

3645954520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 43.

The square root of 3645954520 is about 60381.7399550559. The cubic root of 3645954520 is about 1539.1126782465.

The spelling of 3645954520 in words is "three billion, six hundred forty-five million, nine hundred fifty-four thousand, five hundred twenty".