18442527 has 12 divisors (see below), whose sum is σ = 25707864. Its totient is φ = 11759440.

The previous prime is 18442511. The next prime is 18442531. The reversal of 18442527 is 72524481.

It is not a de Polignac number, because 18442527 - 2⁴ = 18442511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18442507) 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 11 ways as a sum of consecutive naturals, for example, 4224 + ... + 7397.

It is an arithmetic number, because the mean of its divisors is an integer number (2142322).

Almost surely, 2^18442527 is an apocalyptic number.

18442527 is a deficient number, since it is larger than the sum of its proper divisors (7265337).

18442527 is a wasteful number, since it uses less digits than its factorization.

18442527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11670 (or 11647 counting only the distinct ones).

The product of its digits is 17920, while the sum is 33.

The square root of 18442527 is about 4294.4763359460. The cubic root of 18442527 is about 264.2044588076.

It can be divided in two parts, 1844 and 2527, that added together give a triangular number (4371 = T₉₃).

The spelling of 18442527 in words is "eighteen million, four hundred forty-two thousand, five hundred twenty-seven".