18541542 has 16 divisors (see below), whose sum is σ = 38695680. Its totient is φ = 5911752.

The previous prime is 18541541. The next prime is 18541559. The reversal of 18541542 is 24514581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18541541) 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, 67042 + ... + 67317.

It is an arithmetic number, because the mean of its divisors is an integer number (2418480).

Almost surely, 2^18541542 is an apocalyptic number.

18541542 is an abundant number, since it is smaller than the sum of its proper divisors (20154138).

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

18541542 is a wasteful number, since it uses less digits than its factorization.

18541542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134387.

The product of its digits is 6400, while the sum is 30.

The square root of 18541542 is about 4305.9890849838. The cubic root of 18541542 is about 264.6764390839.

The spelling of 18541542 in words is "eighteen million, five hundred forty-one thousand, five hundred forty-two".