3649231572 has 24 divisors (see below), whose sum is σ = 9731284416. Its totient is φ = 1042637568.

The previous prime is 3649231571. The next prime is 3649231583. The reversal of 3649231572 is 2751329463.

3649231572 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 (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649231571) 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, 21721533 + ... + 21721700.

It is an arithmetic number, because the mean of its divisors is an integer number (405470184).

Almost surely, 2^3649231572 is an apocalyptic number.

It is an amenable number.

3649231572 is an abundant number, since it is smaller than the sum of its proper divisors (6082052844).

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

3649231572 is a wasteful number, since it uses less digits than its factorization.

3649231572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43443247 (or 43443245 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The square root of 3649231572 is about 60408.8699778435. The cubic root of 3649231572 is about 1539.5736678966.

The spelling of 3649231572 in words is "three billion, six hundred forty-nine million, two hundred thirty-one thousand, five hundred seventy-two".