192989893 has 4 divisors (see below), whose sum is σ = 193051360. Its totient is φ = 192928428.

The previous prime is 192989887. The next prime is 192989903. The reversal of 192989893 is 398989291.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 192989893 - 2⁵ = 192989861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (192989843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25755 + ... + 32392.

It is an arithmetic number, because the mean of its divisors is an integer number (48262840).

Almost surely, 2^192989893 is an apocalyptic number.

It is an amenable number.

192989893 is a deficient number, since it is larger than the sum of its proper divisors (61467).

192989893 is an equidigital number, since it uses as much as digits as its factorization.

192989893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61466.

The product of its digits is 2519424, while the sum is 58.

The square root of 192989893 is about 13892.0802257977. The cubic root of 192989893 is about 577.8895685467.

The spelling of 192989893 in words is "one hundred ninety-two million, nine hundred eighty-nine thousand, eight hundred ninety-three".