3531623616 has 168 divisors, whose sum is σ = 10407481344. Its totient is φ = 1144450560.

The previous prime is 3531623603. The next prime is 3531623621. The reversal of 3531623616 is 6163261353.

3531623616 is a `hidden beast` number, since 3 + 5 + 3 + 16 + 23 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5170411 + ... + 5171093.

Almost surely, 2^3531623616 is an apocalyptic number.

3531623616 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3531623616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5203740672).

3531623616 is an abundant number, since it is smaller than the sum of its proper divisors (6875857728).

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

3531623616 is a wasteful number, since it uses less digits than its factorization.

3531623616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 926 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 3531623616 is about 59427.4651655276. The cubic root of 3531623616 is about 1522.8535408118.

Adding to 3531623616 its reverse (6163261353), we get a palindrome (9694884969).

The spelling of 3531623616 in words is "three billion, five hundred thirty-one million, six hundred twenty-three thousand, six hundred sixteen".