18270105 has 32 divisors (see below), whose sum is σ = 33619968. Its totient is φ = 8299200.

The previous prime is 18270101. The next prime is 18270113. The reversal of 18270105 is 50107281.

It is not a de Polignac number, because 18270105 - 2² = 18270101 is a prime.

It is a super-2 number, since 2×18270105² = 667593473422050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18270101) 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, 19600 + ... + 20510.

It is an arithmetic number, because the mean of its divisors is an integer number (1050624).

Almost surely, 2^18270105 is an apocalyptic number.

18270105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18270105 is a deficient number, since it is larger than the sum of its proper divisors (15349863).

18270105 is a wasteful number, since it uses less digits than its factorization.

18270105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 18270105 is about 4274.3543372070. The cubic root of 18270105 is about 263.3785168778.

Adding to 18270105 its reverse (50107281), we get a palindrome (68377386).

The spelling of 18270105 in words is "eighteen million, two hundred seventy thousand, one hundred five".