3946531572 has 240 divisors, whose sum is σ = 11779669440. Its totient is φ = 1144378368.

The previous prime is 3946531571. The next prime is 3946531627. The reversal of 3946531572 is 2751356493.

3946531572 is a `hidden beast` number, since 3 + 9 + 46 + 5 + 31 + 572 = 666.

It is a super-2 number, since 2×3946531572² = 31150222897585582368, which contains 22 as substring.

Its product of digits (680400) is a multiple of the sum of its prime factors (972).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946531571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4499598 + ... + 4500474.

It is an arithmetic number, because the mean of its divisors is an integer number (49081956).

Almost surely, 2^3946531572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3946531572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5889834720).

3946531572 is an abundant number, since it is smaller than the sum of its proper divisors (7833137868).

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

3946531572 is a wasteful number, since it uses less digits than its factorization.

3946531572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972 (or 961 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 3946531572 is about 62821.4260583123. The cubic root of 3946531572 is about 1580.2963141313.

The spelling of 3946531572 in words is "three billion, nine hundred forty-six million, five hundred thirty-one thousand, five hundred seventy-two".