18541000 has 32 divisors (see below), whose sum is σ = 43388280. Its totient is φ = 7416000.

The previous prime is 18540997. The next prime is 18541001. The reversal of 18541000 is 14581.

It can be written as a sum of positive squares in 4 ways, for example, as 5189284 + 13351716 = 2278^2 + 3654^2 .

It is not an unprimeable number, because it can be changed into a prime (18541001) 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, 8271 + ... + 10270.

Almost surely, 2^18541000 is an apocalyptic number.

18541000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18541000 is an abundant number, since it is smaller than the sum of its proper divisors (24847280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18541000 is a wasteful number, since it uses less digits than its factorization.

18541000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18562 (or 18548 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 18541000 is about 4305.9261489255. The cubic root of 18541000 is about 264.6738600818.

Adding to 18541000 its reverse (14581), we get a palindrome (18555581).

The spelling of 18541000 in words is "eighteen million, five hundred forty-one thousand".