18630055 has 8 divisors (see below), whose sum is σ = 22960512. Its totient is φ = 14501088.

The previous prime is 18630049. The next prime is 18630061. The reversal of 18630055 is 55003681.

It is an interprime number because it is at equal distance from previous prime (18630049) and next prime (18630061).

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 18630055 - 2³ = 18630047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50167 + ... + 50536.

It is an arithmetic number, because the mean of its divisors is an integer number (2870064).

Almost surely, 2^18630055 is an apocalyptic number.

18630055 is a deficient number, since it is larger than the sum of its proper divisors (4330457).

18630055 is a wasteful number, since it uses less digits than its factorization.

18630055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100745.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 18630055 is about 4316.2547422505. The cubic root of 18630055 is about 265.0969385471.

It can be divided in two parts, 186300 and 55, that added together give a triangular number (186355 = T₆₁₀).

The spelling of 18630055 in words is "eighteen million, six hundred thirty thousand, fifty-five".