188889249 has 4 divisors (see below), whose sum is σ = 251852336. Its totient is φ = 125926164.

The previous prime is 188889229. The next prime is 188889257. The reversal of 188889249 is 942988881.

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 not a de Polignac number, because 188889249 - 2¹² = 188885153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188889229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31481539 + ... + 31481544.

It is an arithmetic number, because the mean of its divisors is an integer number (62963084).

Almost surely, 2^188889249 is an apocalyptic number.

It is an amenable number.

188889249 is a deficient number, since it is larger than the sum of its proper divisors (62963087).

188889249 is an equidigital number, since it uses as much as digits as its factorization.

188889249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62963086.

The product of its digits is 2654208, while the sum is 57.

The square root of 188889249 is about 13743.6985196853. The cubic root of 188889249 is about 573.7672381984.

The spelling of 188889249 in words is "one hundred eighty-eight million, eight hundred eighty-nine thousand, two hundred forty-nine".