3581330961 has 16 divisors (see below), whose sum is σ = 5157978560. Its totient is φ = 2197229760.

The previous prime is 3581330953. The next prime is 3581330971. The reversal of 3581330961 is 1690331853.

3581330961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3581330961 - 2³ = 3581330953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3581330941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125806 + ... + 151623.

It is an arithmetic number, because the mean of its divisors is an integer number (322373660).

Almost surely, 2^3581330961 is an apocalyptic number.

It is an amenable number.

3581330961 is a deficient number, since it is larger than the sum of its proper divisors (1576647599).

3581330961 is a wasteful number, since it uses less digits than its factorization.

3581330961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277776.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 3581330961 is about 59844.2224529653. Note that the first 3 decimals coincide. The cubic root of 3581330961 is about 1529.9649643821.

The spelling of 3581330961 in words is "three billion, five hundred eighty-one million, three hundred thirty thousand, nine hundred sixty-one".