3645572472 has 48 divisors (see below), whose sum is σ = 10191929280. Its totient is φ = 1175990400.

The previous prime is 3645572459. The next prime is 3645572479. The reversal of 3645572472 is 2742755463.

3645572472 is a `hidden beast` number, since 3 + 6 + 4 + 5 + 572 + 4 + 72 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645572479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 814429 + ... + 818892.

It is an arithmetic number, because the mean of its divisors is an integer number (212331860).

Almost surely, 2^3645572472 is an apocalyptic number.

It is an amenable number.

3645572472 is an abundant number, since it is smaller than the sum of its proper divisors (6546356808).

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

3645572472 is a wasteful number, since it uses less digits than its factorization.

3645572472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633364 (or 1633357 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 45.

The square root of 3645572472 is about 60378.5762667521. The cubic root of 3645572472 is about 1539.0589167914.

The spelling of 3645572472 in words is "three billion, six hundred forty-five million, five hundred seventy-two thousand, four hundred seventy-two".