18103134 has 64 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 4908288.

The previous prime is 18103133. The next prime is 18103159. The reversal of 18103134 is 43130181.

18103134 = T₂₄₆ + T₂₄₇ + ... + T₄₉₇.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 18103134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18103133) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 108319 + ... + 108485.

It is an arithmetic number, because the mean of its divisors is an integer number (680400).

Almost surely, 2^18103134 is an apocalyptic number.

18103134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18103134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21772800).

18103134 is an abundant number, since it is smaller than the sum of its proper divisors (25442466).

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

18103134 is a wasteful number, since it uses less digits than its factorization.

18103134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 18103134 is about 4254.7777850318. Note that the first 4 decimals coincide. The cubic root of 18103134 is about 262.5737189778.

The spelling of 18103134 in words is "eighteen million, one hundred three thousand, one hundred thirty-four".