3478081581 has 24 divisors (see below), whose sum is σ = 5413557240. Its totient is φ = 2139088896.

The previous prime is 3478081577. The next prime is 3478081583. The reversal of 3478081581 is 1851808743.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 601475625 + 2876605956 = 24525^2 + 53634^2 .

It is not a de Polignac number, because 3478081581 - 2² = 3478081577 is a prime.

It is a super-2 number, since 2×3478081581² = 24194102968182919122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3478081583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213145 + ... + 228881.

It is an arithmetic number, because the mean of its divisors is an integer number (225564885).

Almost surely, 2^3478081581 is an apocalyptic number.

It is an amenable number.

3478081581 is a deficient number, since it is larger than the sum of its proper divisors (1935475659).

3478081581 is a wasteful number, since it uses less digits than its factorization.

3478081581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17645 (or 17642 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The square root of 3478081581 is about 58975.2624496068. The cubic root of 3478081581 is about 1515.1184549409.

The spelling of 3478081581 in words is "three billion, four hundred seventy-eight million, eighty-one thousand, five hundred eighty-one".