18852878169 has 8 divisors (see below), whose sum is σ = 27930189920. Its totient is φ = 12568585428.

The previous prime is 18852878159. The next prime is 18852878173. The reversal of 18852878169 is 96187825881.

It is not a de Polignac number, because 18852878169 - 2⁸ = 18852877913 is a prime.

It is a super-2 number, since 2×18852878169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18852878159) 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, 349127347 + ... + 349127400.

It is an arithmetic number, because the mean of its divisors is an integer number (3491273740).

Almost surely, 2^18852878169 is an apocalyptic number.

It is an amenable number.

18852878169 is a deficient number, since it is larger than the sum of its proper divisors (9077311751).

18852878169 is an equidigital number, since it uses as much as digits as its factorization.

18852878169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698254756 (or 698254750 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 63.

The spelling of 18852878169 in words is "eighteen billion, eight hundred fifty-two million, eight hundred seventy-eight thousand, one hundred sixty-nine".