3808421965 has 8 divisors (see below), whose sum is σ = 4570859160. Its totient is φ = 3046235712.

The previous prime is 3808421917. The next prime is 3808421989. The reversal of 3808421965 is 5691248083.

It can be written as a sum of positive squares in 4 ways, for example, as 160503561 + 3647918404 = 12669^2 + 60398^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3808421965 - 2²⁹ = 3271551053 is a prime.

It is a super-3 number, since 3×3808421965³ (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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27550 + ... + 91519.

It is an arithmetic number, because the mean of its divisors is an integer number (571357395).

Almost surely, 2^3808421965 is an apocalyptic number.

It is an amenable number.

3808421965 is a deficient number, since it is larger than the sum of its proper divisors (762437195).

3808421965 is a wasteful number, since it uses less digits than its factorization.

3808421965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125471.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 3808421965 is about 61712.4133785092. The cubic root of 3808421965 is about 1561.6427420436.

The spelling of 3808421965 in words is "three billion, eight hundred eight million, four hundred twenty-one thousand, nine hundred sixty-five".