18541480 has 16 divisors (see below), whose sum is σ = 41718420. Its totient is φ = 7416576.

The previous prime is 18541463. The next prime is 18541483. The reversal of 18541480 is 8414581.

It can be written as a sum of positive squares in 2 ways, for example, as 17791524 + 749956 = 4218^2 + 866^2 .

It is not an unprimeable number, because it can be changed into a prime (18541483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231729 + ... + 231808.

Almost surely, 2^18541480 is an apocalyptic number.

18541480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18541480 is an abundant number, since it is smaller than the sum of its proper divisors (23176940).

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

18541480 is a wasteful number, since it uses less digits than its factorization.

18541480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463548 (or 463544 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 18541480 is about 4305.9818857027. The cubic root of 18541480 is about 264.6761440714.

The spelling of 18541480 in words is "eighteen million, five hundred forty-one thousand, four hundred eighty".