18548545 has 8 divisors (see below), whose sum is σ = 23025960. Its totient is φ = 14327040.

The previous prime is 18548539. The next prime is 18548561. The reversal of 18548545 is 54584581.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2961841 + 15586704 = 1721^2 + 3948^2 .

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

It is not a de Polignac number, because 18548545 - 2⁷ = 18548417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18548498 and 18548507.

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, 63816 + ... + 64105.

It is an arithmetic number, because the mean of its divisors is an integer number (2878245).

Almost surely, 2^18548545 is an apocalyptic number.

It is an amenable number.

18548545 is a deficient number, since it is larger than the sum of its proper divisors (4477415).

18548545 is a wasteful number, since it uses less digits than its factorization.

18548545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127955.

The product of its digits is 128000, while the sum is 40.

The square root of 18548545 is about 4306.8021779506. The cubic root of 18548545 is about 264.7097569852.

The spelling of 18548545 in words is "eighteen million, five hundred forty-eight thousand, five hundred forty-five".