3265443981 has 6 divisors (see below), whose sum is σ = 4716752430. Its totient is φ = 2176962648.

The previous prime is 3265443959. The next prime is 3265444033. The reversal of 3265443981 is 1893445623.

3265443981 is a `hidden beast` number, since 3 + 26 + 544 + 3 + 9 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3072928356 + 192515625 = 55434^2 + 13875^2 .

It is not a de Polignac number, because 3265443981 - 2¹⁴ = 3265427597 is a prime.

It is a super-3 number, since 3×3265443981³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3265443941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 181413546 + ... + 181413563.

It is an arithmetic number, because the mean of its divisors is an integer number (786125405).

Almost surely, 2^3265443981 is an apocalyptic number.

It is an amenable number.

3265443981 is a deficient number, since it is larger than the sum of its proper divisors (1451308449).

3265443981 is a wasteful number, since it uses less digits than its factorization.

3265443981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362827115 (or 362827112 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 3265443981 is about 57144.0633924470. The cubic root of 3265443981 is about 1483.5906214588.

The spelling of 3265443981 in words is "three billion, two hundred sixty-five million, four hundred forty-three thousand, nine hundred eighty-one".