18458029989 has 48 divisors (see below), whose sum is σ = 31928832000. Its totient is φ = 10046459808.

The previous prime is 18458029969. The next prime is 18458029991. The reversal of 18458029989 is 98992085481.

18458029989 is a `hidden beast` number, since 18 + 458 + 0 + 2 + 99 + 89 = 666.

It is not a de Polignac number, because 18458029989 - 2⁵ = 18458029957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18458029969) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 319662 + ... + 372960.

It is an arithmetic number, because the mean of its divisors is an integer number (665184000).

Almost surely, 2^18458029989 is an apocalyptic number.

It is an amenable number.

18458029989 is a deficient number, since it is larger than the sum of its proper divisors (13470802011).

18458029989 is a wasteful number, since it uses less digits than its factorization.

18458029989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53574 (or 53571 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 63.

The spelling of 18458029989 in words is "eighteen billion, four hundred fifty-eight million, twenty-nine thousand, nine hundred eighty-nine".