3649745572 has 96 divisors (see below), whose sum is σ = 7695160704. Its totient is φ = 1495603200.

The previous prime is 3649745531. The next prime is 3649745591. The reversal of 3649745572 is 2755479463.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1703622 + ... + 1705762.

It is an arithmetic number, because the mean of its divisors is an integer number (80157924).

Almost surely, 2^3649745572 is an apocalyptic number.

It is an amenable number.

3649745572 is an abundant number, since it is smaller than the sum of its proper divisors (4045415132).

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

3649745572 is a wasteful number, since it uses less digits than its factorization.

3649745572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2269 (or 2267 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 52.

The square root of 3649745572 is about 60413.1241701669. The cubic root of 3649745572 is about 1539.6459482930.

The spelling of 3649745572 in words is "three billion, six hundred forty-nine million, seven hundred forty-five thousand, five hundred seventy-two".