3681793281 has 16 divisors (see below), whose sum is σ = 5125809600. Its totient is φ = 2347735488.

The previous prime is 3681793279. The next prime is 3681793303. The reversal of 3681793281 is 1823971863.

It is not a de Polignac number, because 3681793281 - 2¹ = 3681793279 is a prime.

It is a super-2 number, since 2×3681793281² = 27111203528033489922, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3681793281.

It is not an unprimeable number, because it can be changed into a prime (3681793231) 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 15 ways as a sum of consecutive naturals, for example, 188446 + ... + 207063.

It is an arithmetic number, because the mean of its divisors is an integer number (320363100).

Almost surely, 2^3681793281 is an apocalyptic number.

It is an amenable number.

3681793281 is a deficient number, since it is larger than the sum of its proper divisors (1444016319).

3681793281 is a wasteful number, since it uses less digits than its factorization.

3681793281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395648.

The product of its digits is 435456, while the sum is 48.

The square root of 3681793281 is about 60677.7824331114. The cubic root of 3681793281 is about 1544.1392664846.

The spelling of 3681793281 in words is "three billion, six hundred eighty-one million, seven hundred ninety-three thousand, two hundred eighty-one".