3531684780 has 192 divisors, whose sum is σ = 12153348480. Its totient is φ = 845779968.

The previous prime is 3531684727. The next prime is 3531684781. The reversal of 3531684780 is 874861353.

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 (3531684781) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 252942 + ... + 266538.

It is an arithmetic number, because the mean of its divisors is an integer number (63298690).

Almost surely, 2^3531684780 is an apocalyptic number.

3531684780 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 3531684780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6076674240).

3531684780 is an abundant number, since it is smaller than the sum of its proper divisors (8621663700).

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

3531684780 is a wasteful number, since it uses less digits than its factorization.

3531684780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13665 (or 13657 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 3531684780 is about 59427.9797738405. The cubic root of 3531684780 is about 1522.8623321673.

The spelling of 3531684780 in words is "three billion, five hundred thirty-one million, six hundred eighty-four thousand, seven hundred eighty".