18654945 has 8 divisors (see below), whose sum is σ = 29847936. Its totient is φ = 9949296.

The previous prime is 18654929. The next prime is 18654971. The reversal of 18654945 is 54945681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18654945 - 2⁴ = 18654929 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18654897 and 18654906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621817 + ... + 621846.

It is an arithmetic number, because the mean of its divisors is an integer number (3730992).

Almost surely, 2^18654945 is an apocalyptic number.

18654945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18654945 is a deficient number, since it is larger than the sum of its proper divisors (11192991).

18654945 is a wasteful number, since it uses less digits than its factorization.

18654945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243671.

The product of its digits is 172800, while the sum is 42.

The square root of 18654945 is about 4319.1370665910. The cubic root of 18654945 is about 265.2149436831.

The spelling of 18654945 in words is "eighteen million, six hundred fifty-four thousand, nine hundred forty-five".