1866686310834 has 16 divisors (see below), whose sum is σ = 3733440756672. Its totient is φ = 622217414448.

The previous prime is 1866686310773. The next prime is 1866686310961. The reversal of 1866686310834 is 4380136866681.

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, 2479294 + ... + 3143289.

It is an arithmetic number, because the mean of its divisors is an integer number (233340047292).

Almost surely, 2^{1866686310834} is an apocalyptic number.

1866686310834 is an abundant number, since it is smaller than the sum of its proper divisors (1866754445838).

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

1866686310834 is a wasteful number, since it uses less digits than its factorization.

1866686310834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5677921.

The product of its (nonzero) digits is 23887872, while the sum is 60.

The spelling of 1866686310834 in words is "one trillion, eight hundred sixty-six billion, six hundred eighty-six million, three hundred ten thousand, eight hundred thirty-four".