3808408215481 has 4 divisors (see below), whose sum is σ = 3836206815732. Its totient is φ = 3780609615232.

The previous prime is 3808408215449. The next prime is 3808408215569. The reversal of 3808408215481 is 1845128048083.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3200936061456 + 607472154025 = 1789116^2 + 779405^2 .

It is a cyclic number.

It is not a de Polignac number, because 3808408215481 - 2⁵ = 3808408215449 is a prime.

It is a super-2 number, since 2×3808408215481² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3808408215881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13899299920 + ... + 13899300193.

It is an arithmetic number, because the mean of its divisors is an integer number (959051703933).

Almost surely, 2^{3808408215481} is an apocalyptic number.

It is an amenable number.

3808408215481 is a deficient number, since it is larger than the sum of its proper divisors (27798600251).

3808408215481 is a wasteful number, since it uses less digits than its factorization.

3808408215481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27798600250.

The product of its (nonzero) digits is 1966080, while the sum is 52.

The spelling of 3808408215481 in words is "three trillion, eight hundred eight billion, four hundred eight million, two hundred fifteen thousand, four hundred eighty-one".