1886344064172 has 18 divisors (see below), whose sum is σ = 4768258606748. Its totient is φ = 628781354712.

The previous prime is 1886344064167. The next prime is 1886344064173. The reversal of 1886344064172 is 2714604436881.

1886344064172 is a `hidden beast` number, since 1 + 8 + 8 + 63 + 4 + 406 + 4 + 172 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (1886344064173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26199223078 + ... + 26199223149.

Almost surely, 2^{1886344064172} is an apocalyptic number.

1886344064172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1886344064172 is an abundant number, since it is smaller than the sum of its proper divisors (2881914542576).

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

1886344064172 is a wasteful number, since it uses less digits than its factorization.

1886344064172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52398446237 (or 52398446232 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 1886344064172 in words is "one trillion, eight hundred eighty-six billion, three hundred forty-four million, sixty-four thousand, one hundred seventy-two".