18145107 has 8 divisors (see below), whose sum is σ = 26881680. Its totient is φ = 12096720.

The previous prime is 18145093. The next prime is 18145109. The reversal of 18145107 is 70154181.

It is not a de Polignac number, because 18145107 - 2⁷ = 18144979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 672041 = 18145107 / (1 + 8 + 1 + 4 + 5 + 1 + 0 + 7).

It is not an unprimeable number, because it can be changed into a prime (18145109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335994 + ... + 336047.

It is an arithmetic number, because the mean of its divisors is an integer number (3360210).

Almost surely, 2^18145107 is an apocalyptic number.

18145107 is a deficient number, since it is larger than the sum of its proper divisors (8736573).

18145107 is an equidigital number, since it uses as much as digits as its factorization.

18145107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672050 (or 672044 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 18145107 is about 4259.7073843164. The cubic root of 18145107 is about 262.7764923407.

Adding to 18145107 its reverse (70154181), we get a palindrome (88299288).

The spelling of 18145107 in words is "eighteen million, one hundred forty-five thousand, one hundred seven".