3539681280 has 180 divisors, whose sum is σ = 12273076452. Its totient is φ = 943718400.

The previous prime is 3539681261. The next prime is 3539681291. The reversal of 3539681280 is 821869353.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1656815616 + 1882865664 = 40704^2 + 43392^2 .

It is a tau number, because it is divible by the number of its divisors (180).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 734880 + ... + 739680.

Almost surely, 2^3539681280 is an apocalyptic number.

3539681280 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 3539681280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6136538226).

3539681280 is an abundant number, since it is smaller than the sum of its proper divisors (8733395172).

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

3539681280 is an equidigital number, since it uses as much as digits as its factorization.

3539681280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840 (or 4811 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 3539681280 is about 59495.2206483849. The cubic root of 3539681280 is about 1524.0108292780.

The spelling of 3539681280 in words is "three billion, five hundred thirty-nine million, six hundred eighty-one thousand, two hundred eighty".