3561281460 has 144 divisors (see below), whose sum is σ = 11829871872. Its totient is φ = 860025600.

The previous prime is 3561281447. The next prime is 3561281483. The reversal of 3561281460 is 641821653.

It is a happy number.

3561281460 is a `hidden beast` number, since 3 + 561 + 28 + 14 + 60 = 666.

3561281460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 533262 + ... + 539898.

It is an arithmetic number, because the mean of its divisors is an integer number (82151888).

Almost surely, 2^3561281460 is an apocalyptic number.

3561281460 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 3561281460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5914935936).

3561281460 is an abundant number, since it is smaller than the sum of its proper divisors (8268590412).

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

3561281460 is a wasteful number, since it uses less digits than its factorization.

3561281460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6934 (or 6929 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 3561281460 is about 59676.4732537036. The cubic root of 3561281460 is about 1527.1045328655.

The spelling of 3561281460 in words is "three billion, five hundred sixty-one million, two hundred eighty-one thousand, four hundred sixty".