192191489 has 4 divisors (see below), whose sum is σ = 219647424. Its totient is φ = 164735556.

The previous prime is 192191471. The next prime is 192191491. The reversal of 192191489 is 984191291.

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 a de Polignac number, because none of the positive numbers 2^k-192191489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (192191459) 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, 13727957 + ... + 13727970.

It is an arithmetic number, because the mean of its divisors is an integer number (54911856).

Almost surely, 2^192191489 is an apocalyptic number.

It is an amenable number.

192191489 is a deficient number, since it is larger than the sum of its proper divisors (27455935).

192191489 is an equidigital number, since it uses as much as digits as its factorization.

192191489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27455934.

The product of its digits is 46656, while the sum is 44.

The square root of 192191489 is about 13863.3145026722. The cubic root of 192191489 is about 577.0915525435.

The spelling of 192191489 in words is "one hundred ninety-two million, one hundred ninety-one thousand, four hundred eighty-nine".