3818080828081 has 81 divisors (see below), whose sum is σ = 4403317537827. Its totient is φ = 3308966519040.

The previous prime is 3818080828073. The next prime is 3818080828087. The reversal of 3818080828081 is 1808280808183.

The square root of 3818080828081 is 1953991.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 2981807157681 + 836273670400 = 1726791^2 + 914480^2 .

It is not a de Polignac number, because 3818080828081 - 2³ = 3818080828073 is a prime.

It is a super-2 number, since 2×3818080828081² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3818080828087) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 52302477061 + ... + 52302477133.

Almost surely, 2^{3818080828081} is an apocalyptic number.

3818080828081 is the 1953991-st square number.

3818080828081 is the 976996-th centered octagonal number.

It is an amenable number.

3818080828081 is a deficient number, since it is larger than the sum of its proper divisors (585236709746).

3818080828081 is an frugal number, since it uses more digits than its factorization.

3818080828081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 1572864, while the sum is 55.

The spelling of 3818080828081 in words is "three trillion, eight hundred eighteen billion, eighty million, eight hundred twenty-eight thousand, eighty-one".