18889077399 has 8 divisors (see below), whose sum is σ = 25190950272. Its totient is φ = 12589961400.

The previous prime is 18889077391. The next prime is 18889077407. The reversal of 18889077399 is 99377098881.

It is an interprime number because it is at equal distance from previous prime (18889077391) and next prime (18889077407).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18889077399 - 2³ = 18889077391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18889077391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673177 + ... + 700674.

It is an arithmetic number, because the mean of its divisors is an integer number (3148868784).

Almost surely, 2^18889077399 is an apocalyptic number.

18889077399 is a deficient number, since it is larger than the sum of its proper divisors (6301872873).

18889077399 is a wasteful number, since it uses less digits than its factorization.

18889077399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378437.

The product of its (nonzero) digits is 54867456, while the sum is 69.

The spelling of 18889077399 in words is "eighteen billion, eight hundred eighty-nine million, seventy-seven thousand, three hundred ninety-nine".