1641533524 has 12 divisors (see below), whose sum is σ = 2876405364. Its totient is φ = 819703424.

The previous prime is 1641533521. The next prime is 1641533563. The reversal of 1641533524 is 4253351461.

It can be written as a sum of positive squares in 2 ways, for example, as 394737424 + 1246796100 = 19868^2 + 35310^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1641533524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641533521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262357 + ... + 268540.

It is an arithmetic number, because the mean of its divisors is an integer number (239700447).

Almost surely, 2^1641533524 is an apocalyptic number.

It is an amenable number.

1641533524 is a deficient number, since it is larger than the sum of its proper divisors (1234871840).

1641533524 is a wasteful number, since it uses less digits than its factorization.

1641533524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531674 (or 531672 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 1641533524 is about 40515.8428765835. The cubic root of 1641533524 is about 1179.6411635122.

Adding to 1641533524 its reverse (4253351461), we get a palindrome (5894884985).

The spelling of 1641533524 in words is "one billion, six hundred forty-one million, five hundred thirty-three thousand, five hundred twenty-four".