3529531980 has 288 divisors, whose sum is σ = 11905071360. Its totient is φ = 841052160.

The previous prime is 3529531963. The next prime is 3529531981. The reversal of 3529531980 is 891359253.

3529531980 is a `hidden beast` number, since 3 + 5 + 29 + 531 + 98 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (3529531981) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11276304 + ... + 11276616.

Almost surely, 2^3529531980 is an apocalyptic number.

3529531980 is a gapful number since it is divisible by the number (30) 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 3529531980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5952535680).

3529531980 is an abundant number, since it is smaller than the sum of its proper divisors (8375539380).

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

3529531980 is a wasteful number, since it uses less digits than its factorization.

3529531980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 3529531980 is about 59409.8643324490. The cubic root of 3529531980 is about 1522.5528401828.

The spelling of 3529531980 in words is "three billion, five hundred twenty-nine million, five hundred thirty-one thousand, nine hundred eighty".