18103345 has 16 divisors (see below), whose sum is σ = 23969232. Its totient is φ = 13040640.

The previous prime is 18103331. The next prime is 18103357. The reversal of 18103345 is 54330181.

It can be written as a sum of positive squares in 8 ways, for example, as 8904256 + 9199089 = 2984^2 + 3033^2 .

It is not a de Polignac number, because 18103345 - 2⁵ = 18103313 is a prime.

It is a super-2 number, since 2×18103345² = 655462200378050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732 + ... + 6061.

It is an arithmetic number, because the mean of its divisors is an integer number (1498077).

Almost surely, 2^18103345 is an apocalyptic number.

It is an amenable number.

18103345 is a deficient number, since it is larger than the sum of its proper divisors (5865887).

18103345 is a wasteful number, since it uses less digits than its factorization.

18103345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6852.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 18103345 is about 4254.8025806141. The cubic root of 18103345 is about 262.5747391113.

The spelling of 18103345 in words is "eighteen million, one hundred three thousand, three hundred forty-five".