18541020 has 48 divisors (see below), whose sum is σ = 53188128. Its totient is φ = 4823040.

The previous prime is 18541001. The next prime is 18541021. The reversal of 18541020 is 2014581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18541021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1309 + ... + 6228.

It is an arithmetic number, because the mean of its divisors is an integer number (1108086).

Almost surely, 2^18541020 is an apocalyptic number.

18541020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18541020 is an abundant number, since it is smaller than the sum of its proper divisors (34647108).

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

18541020 is a wasteful number, since it uses less digits than its factorization.

18541020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7590 (or 7588 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 18541020 is about 4305.9284713056. The cubic root of 18541020 is about 264.6739552488.

The spelling of 18541020 in words is "eighteen million, five hundred forty-one thousand, twenty".