186852820081 has 8 divisors (see below), whose sum is σ = 187819041600. Its totient is φ = 185888610960.

The previous prime is 186852820067. The next prime is 186852820117. The reversal of 186852820081 is 180028258681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 186852820081 - 2²⁷ = 186718602353 is a prime.

It is a super-2 number, since 2×186852820081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (186852820051) 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 7 ways as a sum of consecutive naturals, for example, 316741 + ... + 688498.

It is an arithmetic number, because the mean of its divisors is an integer number (23477380200).

Almost surely, 2^186852820081 is an apocalyptic number.

It is an amenable number.

186852820081 is a deficient number, since it is larger than the sum of its proper divisors (966221519).

186852820081 is a wasteful number, since it uses less digits than its factorization.

186852820081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006199.

The product of its (nonzero) digits is 491520, while the sum is 49.

The spelling of 186852820081 in words is "one hundred eighty-six billion, eight hundred fifty-two million, eight hundred twenty thousand, eighty-one".