18769089 has 4 divisors (see below), whose sum is σ = 25025456. Its totient is φ = 12512724.

The previous prime is 18769087. The next prime is 18769097. The reversal of 18769089 is 98096781.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98096781 = 3 ⋅32698927.

It is not a de Polignac number, because 18769089 - 2¹ = 18769087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18769087) 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, 3128179 + ... + 3128184.

It is an arithmetic number, because the mean of its divisors is an integer number (6256364).

Almost surely, 2^18769089 is an apocalyptic number.

It is an amenable number.

18769089 is a deficient number, since it is larger than the sum of its proper divisors (6256367).

18769089 is an equidigital number, since it uses as much as digits as its factorization.

18769089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6256366.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 18769089 is about 4332.3306660503. The cubic root of 18769089 is about 265.7547676706.

The spelling of 18769089 in words is "eighteen million, seven hundred sixty-nine thousand, eighty-nine".