192891868 has 18 divisors (see below), whose sum is σ = 365525664. Its totient is φ = 89026704.

The previous prime is 192891817. The next prime is 192891887. The reversal of 192891868 is 868198291.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141996 + ... + 143347.

Almost surely, 2^192891868 is an apocalyptic number.

It is an amenable number.

192891868 is a deficient number, since it is larger than the sum of its proper divisors (172633796).

192891868 is a wasteful number, since it uses less digits than its factorization.

192891868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285373 (or 285358 counting only the distinct ones).

The product of its digits is 497664, while the sum is 52.

The square root of 192891868 is about 13888.5516883511. The cubic root of 192891868 is about 577.7917098492.

The spelling of 192891868 in words is "one hundred ninety-two million, eight hundred ninety-one thousand, eight hundred sixty-eight".