3869691705 has 128 divisors (see below), whose sum is σ = 7900416000. Its totient is φ = 1779644160.

The previous prime is 3869691697. The next prime is 3869691719. The reversal of 3869691705 is 5071969683.

3869691705 is a `hidden beast` number, since 386 + 96 + 9 + 170 + 5 = 666.

It is not a de Polignac number, because 3869691705 - 2³ = 3869691697 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2540074 + ... + 2541596.

It is an arithmetic number, because the mean of its divisors is an integer number (61722000).

Almost surely, 2^3869691705 is an apocalyptic number.

It is an amenable number.

3869691705 is an abundant number, since it is smaller than the sum of its proper divisors (4030724295).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3869691705 is a wasteful number, since it uses less digits than its factorization.

3869691705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636 (or 1630 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The square root of 3869691705 is about 62206.8461264514. The cubic root of 3869691705 is about 1569.9727780045.

The spelling of 3869691705 in words is "three billion, eight hundred sixty-nine million, six hundred ninety-one thousand, seven hundred five".