3865426505 has 8 divisors (see below), whose sum is σ = 4639411392. Its totient is φ = 3091741488.

The previous prime is 3865426489. The next prime is 3865426553. The reversal of 3865426505 is 5056245683.

3865426505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3865426505 - 2⁴ = 3865426489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 45557 + ... + 99026.

It is an arithmetic number, because the mean of its divisors is an integer number (579926424).

Almost surely, 2^3865426505 is an apocalyptic number.

It is an amenable number.

3865426505 is a deficient number, since it is larger than the sum of its proper divisors (773984887).

3865426505 is a wasteful number, since it uses less digits than its factorization.

3865426505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149935.

The product of its (nonzero) digits is 864000, while the sum is 44.

The square root of 3865426505 is about 62172.5542743742. The cubic root of 3865426505 is about 1569.3957544647.

The spelling of 3865426505 in words is "three billion, eight hundred sixty-five million, four hundred twenty-six thousand, five hundred five".