3524661385 has 36 divisors (see below), whose sum is σ = 5022612684. Its totient is φ = 2366757120.

The previous prime is 3524661383. The next prime is 3524661389. The reversal of 3524661385 is 5831664253.

It can be written as a sum of positive squares in 6 ways, for example, as 109077136 + 3415584249 = 10444^2 + 58443^2 .

It is not a de Polignac number, because 3524661385 - 2¹ = 3524661383 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3524661383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6764925 + ... + 6765445.

It is an arithmetic number, because the mean of its divisors is an integer number (139517019).

Almost surely, 2^3524661385 is an apocalyptic number.

3524661385 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3524661385 is a deficient number, since it is larger than the sum of its proper divisors (1497951299).

3524661385 is an frugal number, since it uses more digits than its factorization.

3524661385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114 (or 586 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The square root of 3524661385 is about 59368.8587139756. The cubic root of 3524661385 is about 1521.8521663599.

The spelling of 3524661385 in words is "three billion, five hundred twenty-four million, six hundred sixty-one thousand, three hundred eighty-five".