1866374710164 has 54 divisors (see below), whose sum is σ = 4795285668446. Its totient is φ = 611905144320.

The previous prime is 1866374710163. The next prime is 1866374710177. The reversal of 1866374710164 is 4610174736681.

1866374710164 is a `hidden beast` number, since 1 + 8 + 6 + 6 + 3 + 7 + 471 + 0 + 164 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 544201290000 + 1322173420164 = 737700^2 + 1149858^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1866374710164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1866374710163) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 64005412 + ... + 64034564.

Almost surely, 2^{1866374710164} is an apocalyptic number.

It is an amenable number.

1866374710164 is an abundant number, since it is smaller than the sum of its proper divisors (2928910958282).

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

1866374710164 is an frugal number, since it uses more digits than its factorization.

1866374710164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58377 (or 29219 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 1866374710164 in words is "one trillion, eight hundred sixty-six billion, three hundred seventy-four million, seven hundred ten thousand, one hundred sixty-four".