3865109283966 has 32 divisors (see below), whose sum is σ = 8834649804288. Its totient is φ = 1104302651040.

The previous prime is 3865109283953. The next prime is 3865109283983. The reversal of 3865109283966 is 6693829015683.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3865109283897 and 3865109283906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2936151 + ... + 4043661.

It is an arithmetic number, because the mean of its divisors is an integer number (276082806384).

Almost surely, 2^{3865109283966} is an apocalyptic number.

3865109283966 is an abundant number, since it is smaller than the sum of its proper divisors (4969540520322).

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

3865109283966 is a wasteful number, since it uses less digits than its factorization.

3865109283966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190616.

The product of its (nonzero) digits is 100776960, while the sum is 66.

The spelling of 3865109283966 in words is "three trillion, eight hundred sixty-five billion, one hundred nine million, two hundred eighty-three thousand, nine hundred sixty-six".