18869055 has 16 divisors (see below), whose sum is σ = 30275424. Its totient is φ = 10035200.

The previous prime is 18869051. The next prime is 18869063. The reversal of 18869055 is 55096881.

It is not a de Polignac number, because 18869055 - 2² = 18869051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18868998 and 18869016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18869051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4447 + ... + 7583.

It is an arithmetic number, because the mean of its divisors is an integer number (1892214).

Almost surely, 2^18869055 is an apocalyptic number.

18869055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18869055 is a deficient number, since it is larger than the sum of its proper divisors (11406369).

18869055 is a wasteful number, since it uses less digits than its factorization.

18869055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546.

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 18869055 is about 4343.8525527462. The cubic root of 18869055 is about 266.2257444456.

The spelling of 18869055 in words is "eighteen million, eight hundred sixty-nine thousand, fifty-five".