18029087989 has 8 divisors (see below), whose sum is σ = 19688116032. Its totient is φ = 16373396640.

The previous prime is 18029087971. The next prime is 18029088023. The reversal of 18029087989 is 98978092081.

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

It is a cyclic number.

It is not a de Polignac number, because 18029087989 - 2⁷ = 18029087861 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 (18029087929) 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, 822864 + ... + 844489.

It is an arithmetic number, because the mean of its divisors is an integer number (2461014504).

Almost surely, 2^18029087989 is an apocalyptic number.

It is an amenable number.

18029087989 is a deficient number, since it is larger than the sum of its proper divisors (1659028043).

18029087989 is a wasteful number, since it uses less digits than its factorization.

18029087989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668347.

The product of its (nonzero) digits is 5225472, while the sum is 61.

The spelling of 18029087989 in words is "eighteen billion, twenty-nine million, eighty-seven thousand, nine hundred eighty-nine".