18955089 has 12 divisors (see below), whose sum is σ = 27438736. Its totient is φ = 12609432.

The previous prime is 18955087. The next prime is 18955093. The reversal of 18955089 is 98055981.

18955089 is a `hidden beast` number, since 18 + 9 + 550 + 89 = 666.

It is not a de Polignac number, because 18955089 - 2¹ = 18955087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18955087) 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 11 ways as a sum of consecutive naturals, for example, 2694 + ... + 6720.

Almost surely, 2^18955089 is an apocalyptic number.

It is an amenable number.

18955089 is a deficient number, since it is larger than the sum of its proper divisors (8483647).

18955089 is a wasteful number, since it uses less digits than its factorization.

18955089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4556 (or 4553 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The square root of 18955089 is about 4353.7442506422. The cubic root of 18955089 is about 266.6297523555.

It can be divided in two parts, 189 and 55089, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 18955089 in words is "eighteen million, nine hundred fifty-five thousand, eighty-nine".