18810234 has 12 divisors (see below), whose sum is σ = 40755546. Its totient is φ = 6270072.

The previous prime is 18810229. The next prime is 18810263. The reversal of 18810234 is 43201881.

It can be written as a sum of positive squares in only one way, i.e., 9828225 + 8982009 = 3135^2 + 2997^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18810198 and 18810207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 522489 + ... + 522524.

Almost surely, 2^18810234 is an apocalyptic number.

18810234 is an abundant number, since it is smaller than the sum of its proper divisors (21945312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18810234 is a wasteful number, since it uses less digits than its factorization.

18810234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045021 (or 1045018 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 18810234 is about 4337.0766652205. The cubic root of 18810234 is about 265.9488189919.

It can be divided in two parts, 18810 and 234, that added together give a square (19044 = 138²).

The spelling of 18810234 in words is "eighteen million, eight hundred ten thousand, two hundred thirty-four".